Fix filenames changing when running LB after import

LaunchBox seems to have new rules for updating the names of files
in the data directory, in particular Playlists, in which it attempts
to change the filename to match the <Name> attribute name and then
apply those rules to deal with illegal characters.

This was causing icon names to be mismatched, meaning they wouldn't
show in LaunchBox, and playlist names to not match on future imports,
such that FIL didn't know they were the same playlist.

Better kosherize filenames to try and match what LB would do so that
it doesn't change them after FIL has touched them.

app/src/frontend/launchbox/lb-install.cpp

@@ -306,13 +306,26 @@ QString Install::translateDocName(const QString& originalName, Fe::DataDoc::Type
 {
     Q_UNUSED(type);
 
-    // Perform general kosherization
-    QString translatedName = Qx::kosherizeFileName(originalName);
-
-    // LB specific changes
+    /* LB has started doing something strange and annoying...
+     * It appears it might be that it tries to override the filename of playlists with the
+     * internal name (i.e. <Name> within the file), and then applies its own substitution
+     * rules to deal with illegal characters. As such, here we try to do what LB does to avoid
+     * unintended filename changes after an import (since that will lead to mismatches for
+     * icons and futurer imports).
+     *
+     * The replacements needed, and the order of them, will need to be determined on a case-by-case
+     * basis as they come up.
+     */
+
+    QString translatedName = originalName;
+
+    // LB matched changes (LB might replace all illegal characters with underscores, but these are is known for sure)
+    translatedName.replace(':','_');
     translatedName.replace('#','_');
     translatedName.replace('\'','_');
-    translatedName.replace('-','_');
+
+    // General kosherization
+    translatedName = Qx::kosherizeFileName(translatedName);
 
     return translatedName;
 }