Use setLevelDirError for level not found & parse errors

This exports the previously-internal setLevelDirError function in
FileSystemUtils and uses it for if a level is not found or there was a
parsing error. Previously, if a level failed to load in these ways, it
would take you to the error screen with no error, while printing it to
the console. But this makes it more user-friendly.

As a bonus, the text is localizable, just like the existing usage of
FILESYSTEM_setLevelDirError for if a path couldn't be mounted.

desktop_version/lang/ca/strings.xml

@@ -759,6 +759,8 @@ Has trobat el laboratori secret!" explanation="" max="34*4"/>
     <string english="MASTER OF THE UNIVERSE" translation="MÀSTER DE L’UNIVERS" explanation="achievement/trophy title - no death mode complete" max="38*2"/>
     <string english="Complete the game in no death mode" translation="Passa’t el joc en el mode|sense cap mort" explanation="achievement/trophy description" max="38*2"/>
     <string english="Could not mount {path}: real directory doesn&apos;t exist" translation="No s’ha pogut muntar {path}: el directori real no existeix" explanation="mount: link/attach a directory (folder) in the filesystem into the game&apos;s filesystem so we can access it" max="38*6"/>
+    <string english="Level {path} not found" translation="" explanation="" max="38*6"/>
+    <string english="Error parsing {path}: {error}" translation="" explanation="we tried to parse the level file, but failed" max="38*6"/>
     <string english="ERROR: Could not write to language folder! Make sure there is no &quot;lang&quot; folder next to the regular saves." translation="ERROR: No s’ha pogut escriure|a la carpeta de llengua! Assegura’t|que no hi hagi cap carpeta «lang»|al costat de les partides desades normals." explanation="" max="38*5"/>
     <string english="" translation="" explanation=""/>
     <string english="" translation="" explanation=""/>

desktop_version/lang/de/strings.xml

@@ -759,6 +759,8 @@ Du hast das Geheimlabor gefunden!" explanation="" max="34*4"/>
     <string english="MASTER OF THE UNIVERSE" translation="HERRSCHER DES UNIVERSUMS" explanation="achievement/trophy title - no death mode complete" max="38*2"/>
     <string english="Complete the game in no death mode" translation="Beende das Spiel im Keine-Tode-Modus" explanation="achievement/trophy description" max="38*2"/>
     <string english="Could not mount {path}: real directory doesn&apos;t exist" translation="Konnte {Pfad} nicht mounten: echtes Verzeichnis existiert nicht" explanation="mount: link/attach a directory (folder) in the filesystem into the game&apos;s filesystem so we can access it" max="38*6"/>
+    <string english="Level {path} not found" translation="" explanation="" max="38*6"/>
+    <string english="Error parsing {path}: {error}" translation="" explanation="we tried to parse the level file, but failed" max="38*6"/>
     <string english="ERROR: Could not write to language folder! Make sure there is no &quot;lang&quot; folder next to the regular saves." translation="FEHLER: Konnte nicht in den Sprachordner schreiben! Stelle sicher, dass es keinen &quot;lang&quot;-Ordner neben den regulären Spielständen gibt." explanation="" max="38*5"/>
     <string english="" translation="" explanation=""/>
     <string english="" translation="" explanation=""/>

desktop_version/lang/en/strings.xml

@@ -753,6 +753,8 @@ You have found the secret lab!" translation="" explanation="" max="34*4"/>
     <string english="MASTER OF THE UNIVERSE" translation="" explanation="achievement/trophy title - no death mode complete" max="38*2"/>
     <string english="Complete the game in no death mode" translation="" explanation="achievement/trophy description" max="38*2"/>
     <string english="Could not mount {path}: real directory doesn&apos;t exist" translation="" explanation="mount: link/attach a directory (folder) in the filesystem into the game&apos;s filesystem so we can access it" max="38*6"/>
+    <string english="Level {path} not found" translation="" explanation="" max="38*6"/>
+    <string english="Error parsing {path}: {error}" translation="" explanation="we tried to parse the level file, but failed" max="38*6"/>
     <string english="ERROR: Could not write to language folder! Make sure there is no &quot;lang&quot; folder next to the regular saves." translation="" explanation="" max="38*5"/>
     <string english="" translation="" explanation=""/>
     <string english="" translation="" explanation=""/>

desktop_version/lang/eo/strings.xml

@@ -759,6 +759,8 @@ Vi trovis la sekretan labon!" explanation="" max="34*4"/>
     <string english="MASTER OF THE UNIVERSE" translation="MAJSTRO DE L&apos; UNIVERSO" explanation="achievement/trophy title - no death mode complete" max="38*2"/>
     <string english="Complete the game in no death mode" translation="Kompletigi la ludon en mortula reĝimo" explanation="achievement/trophy description" max="38*2"/>
     <string english="Could not mount {path}: real directory doesn&apos;t exist" translation="Ne eblis munti {path}: vera dosierujo ne ekzistas" explanation="mount: link/attach a directory (folder) in the filesystem into the game&apos;s filesystem so we can access it" max="38*6"/>
+    <string english="Level {path} not found" translation="" explanation="" max="38*6"/>
+    <string english="Error parsing {path}: {error}" translation="" explanation="we tried to parse the level file, but failed" max="38*6"/>
     <string english="ERROR: Could not write to language folder! Make sure there is no &quot;lang&quot; folder next to the regular saves." translation="ERARO: Ne eblis skribi en lingvo-dosierujo! Certigu, ke ne estas dosierujo &quot;lang&quot; apud la normalaj konservaĵoj." explanation="" max="38*5"/>
     <string english="" translation="" explanation=""/>
     <string english="" translation="" explanation=""/>

desktop_version/lang/es/strings.xml

@@ -759,6 +759,8 @@ You have found the secret lab!" translation="¡Enhorabuena!
     <string english="MASTER OF THE UNIVERSE" translation="LÍDER DEL UNIVERSO" explanation="achievement/trophy title - no death mode complete" max="38*2"/>
     <string english="Complete the game in no death mode" translation="Completa el juego en el modo sin muerte" explanation="achievement/trophy description" max="38*2"/>
     <string english="Could not mount {path}: real directory doesn&apos;t exist" translation="No se ha podido seguir {path}: El directorio real no existe" explanation="mount: link/attach a directory (folder) in the filesystem into the game&apos;s filesystem so we can access it" max="38*6"/>
+    <string english="Level {path} not found" translation="" explanation="" max="38*6"/>
+    <string english="Error parsing {path}: {error}" translation="" explanation="we tried to parse the level file, but failed" max="38*6"/>
     <string english="ERROR: Could not write to language folder! Make sure there is no &quot;lang&quot; folder next to the regular saves." translation="ERROR: No se ha podido escribir en la carpeta de idioma. Comprueba que no haya una carpeta &quot;lang&quot; junto a los guardados normales." explanation="" max="38*5"/>
     <string english="" translation="" explanation=""/>
     <string english="" translation="" explanation=""/>

desktop_version/lang/fr/strings.xml

@@ -753,6 +753,8 @@ You have found the secret lab!" translation="Félicitations ! Vous avez trouvé
     <string english="MASTER OF THE UNIVERSE" translation="MAÎTRE DE L&apos;UNIVERS" explanation="achievement/trophy title - no death mode complete" max="38*2"/>
     <string english="Complete the game in no death mode" translation="Terminer le jeu en mode sans mort" explanation="achievement/trophy description" max="38*2"/>
     <string english="Could not mount {path}: real directory doesn&apos;t exist" translation="Impossible de monter {path} : le véritable dossier n&apos;existe pas" explanation="mount: link/attach a directory (folder) in the filesystem into the game&apos;s filesystem so we can access it" max="38*6"/>
+    <string english="Level {path} not found" translation="" explanation="" max="38*6"/>
+    <string english="Error parsing {path}: {error}" translation="" explanation="we tried to parse the level file, but failed" max="38*6"/>
     <string english="ERROR: Could not write to language folder! Make sure there is no &quot;lang&quot; folder next to the regular saves." translation="ERREUR : impossible d&apos;écrire dans le dossier de langue ! Assurez-vous qu&apos;il n&apos;y ait pas de dossier « lang » à côté des sauvegardes standard." explanation="" max="38*5"/>
     <string english="" translation="" explanation=""/>
     <string english="" translation="" explanation=""/>

desktop_version/lang/it/strings.xml

@@ -759,6 +759,8 @@ Hai trovato il laboratorio segreto!" explanation="" max="34*4"/>
     <string english="MASTER OF THE UNIVERSE" translation="DOMINATORE DELL&apos;UNIVERSO" explanation="achievement/trophy title - no death mode complete" max="38*2"/>
     <string english="Complete the game in no death mode" translation="Completa il gioco in modalità Una vita" explanation="achievement/trophy description" max="38*2"/>
     <string english="Could not mount {path}: real directory doesn&apos;t exist" translation="Impossibile installare {path}: la directory reale non esiste" explanation="mount: link/attach a directory (folder) in the filesystem into the game&apos;s filesystem so we can access it" max="38*6"/>
+    <string english="Level {path} not found" translation="" explanation="" max="38*6"/>
+    <string english="Error parsing {path}: {error}" translation="" explanation="we tried to parse the level file, but failed" max="38*6"/>
     <string english="ERROR: Could not write to language folder! Make sure there is no &quot;lang&quot; folder next to the regular saves." translation="ERRORE: impossibile scrivere sulla cartella lingua! Assicurati che non ci sia una cartella &quot;lang&quot; insieme ai normali salvataggi." explanation="" max="38*5"/>
     <string english="" translation="" explanation=""/>
     <string english="" translation="" explanation=""/>

desktop_version/lang/nl/strings.xml

@@ -760,6 +760,8 @@ Je hebt het geheime lab gevonden!" explanation="" max="34*4"/>
     <string english="MASTER OF THE UNIVERSE" translation="MEESTER VAN HET UNIVERSUM" explanation="achievement/trophy title - no death mode complete" max="38*2"/>
     <string english="Complete the game in no death mode" translation="Voltooi het spel in de éénlevenmodus" explanation="achievement/trophy description" max="38*2"/>
     <string english="Could not mount {path}: real directory doesn&apos;t exist" translation="Kon {path} niet aankoppelen: echte map bestaat niet" explanation="mount: link/attach a directory (folder) in the filesystem into the game&apos;s filesystem so we can access it" max="38*6"/>
+    <string english="Level {path} not found" translation="" explanation="" max="38*6"/>
+    <string english="Error parsing {path}: {error}" translation="" explanation="we tried to parse the level file, but failed" max="38*6"/>
     <string english="ERROR: Could not write to language folder! Make sure there is no &quot;lang&quot; folder next to the regular saves." translation="ERROR: Kan niet schrijven naar talenmap! Zorg dat er geen &quot;lang&quot;-map naast de normale opgeslagen bestanden staat." explanation="" max="38*5"/>
     <string english="" translation="" explanation=""/>
     <string english="" translation="" explanation=""/>

desktop_version/lang/pt_BR/strings.xml

@@ -759,6 +759,8 @@ Você encontrou o laboratório secreto!" explanation="" max="34*4"/>
     <string english="MASTER OF THE UNIVERSE" translation="MESTRE DO UNIVERSO" explanation="achievement/trophy title - no death mode complete" max="38*2"/>
     <string english="Complete the game in no death mode" translation="Complete o jogo no modo sem mortes" explanation="achievement/trophy description" max="38*2"/>
     <string english="Could not mount {path}: real directory doesn&apos;t exist" translation="Não foi possível montar {path}: o diretório real não existe" explanation="mount: link/attach a directory (folder) in the filesystem into the game&apos;s filesystem so we can access it" max="38*6"/>
+    <string english="Level {path} not found" translation="" explanation="" max="38*6"/>
+    <string english="Error parsing {path}: {error}" translation="" explanation="we tried to parse the level file, but failed" max="38*6"/>
     <string english="ERROR: Could not write to language folder! Make sure there is no &quot;lang&quot; folder next to the regular saves." translation="ERRO: não foi possível gravar na pasta do idioma! Não pode ter &quot;lang&quot; ao lado dos salvamentos comuns." explanation="" max="38*5"/>
     <string english="" translation="" explanation=""/>
     <string english="" translation="" explanation=""/>

desktop_version/lang/pt_PT/strings.xml

@@ -759,6 +759,8 @@ Encontraste o laboratório secreto!" explanation="" max="34*4"/>
     <string english="MASTER OF THE UNIVERSE" translation="MESTRE DO UNIVERSO" explanation="achievement/trophy title - no death mode complete" max="38*2"/>
     <string english="Complete the game in no death mode" translation="Conclui o jogo em Imortal." explanation="achievement/trophy description" max="38*2"/>
     <string english="Could not mount {path}: real directory doesn&apos;t exist" translation="Não foi possível montar {path}: o diretório não existe" explanation="mount: link/attach a directory (folder) in the filesystem into the game&apos;s filesystem so we can access it" max="38*6"/>
+    <string english="Level {path} not found" translation="" explanation="" max="38*6"/>
+    <string english="Error parsing {path}: {error}" translation="" explanation="we tried to parse the level file, but failed" max="38*6"/>
     <string english="ERROR: Could not write to language folder! Make sure there is no &quot;lang&quot; folder next to the regular saves." translation="ERRO: Não foi possível escrever na pasta de idioma! Certifica-te de que não há uma pasta &apos;&apos;lang&apos;&apos; junto dos dados guardados." explanation="" max="38*5"/>
     <string english="" translation="" explanation=""/>
     <string english="" translation="" explanation=""/>

desktop_version/lang/ru/strings.xml

@@ -759,6 +759,8 @@ You have found the secret lab!" translation="Поздравляем!
     <string english="MASTER OF THE UNIVERSE" translation="ВЛАСТЕЛИН ВСЕЛЕННОЙ" explanation="achievement/trophy title - no death mode complete" max="38*2"/>
     <string english="Complete the game in no death mode" translation="Пройдите игру в режиме &quot;не умирая&quot;" explanation="achievement/trophy description" max="38*2"/>
     <string english="Could not mount {path}: real directory doesn&apos;t exist" translation="Не удалось монтировать {path}: настоящего каталога по данному пути не существует" explanation="mount: link/attach a directory (folder) in the filesystem into the game&apos;s filesystem so we can access it" max="38*6"/>
+    <string english="Level {path} not found" translation="" explanation="" max="38*6"/>
+    <string english="Error parsing {path}: {error}" translation="" explanation="we tried to parse the level file, but failed" max="38*6"/>
     <string english="ERROR: Could not write to language folder! Make sure there is no &quot;lang&quot; folder next to the regular saves." translation="ОШИБКА: Не удалось записать данные в папку локализации! Убедитесь, что рядом с обычными сохранениями нет папки &quot;lang&quot;." explanation="" max="38*5"/>
     <string english="" translation="" explanation=""/>
     <string english="" translation="" explanation=""/>

desktop_version/lang/tr/strings.xml

@@ -759,6 +759,8 @@ Gizli laboratuvarı buldun!" explanation="" max="34*4"/>
     <string english="MASTER OF THE UNIVERSE" translation="EVRENİN USTASI" explanation="achievement/trophy title - no death mode complete" max="38*2"/>
     <string english="Complete the game in no death mode" translation="Oyunu ölümsüz modunda tamamla" explanation="achievement/trophy description" max="38*2"/>
     <string english="Could not mount {path}: real directory doesn&apos;t exist" translation="{path} bağlanamadı: gerçek klasör yok" explanation="mount: link/attach a directory (folder) in the filesystem into the game&apos;s filesystem so we can access it" max="38*6"/>
+    <string english="Level {path} not found" translation="" explanation="" max="38*6"/>
+    <string english="Error parsing {path}: {error}" translation="" explanation="we tried to parse the level file, but failed" max="38*6"/>
     <string english="ERROR: Could not write to language folder! Make sure there is no &quot;lang&quot; folder next to the regular saves." translation="HATA: Dil klasörüne yazılamadı! Normal kayıt dosyalarının yanında &quot;lang&quot; adlı bir klasör olmadığından emin ol." explanation="" max="38*5"/>
     <string english="" translation="" explanation=""/>
     <string english="" translation="" explanation=""/>