(Default Version) Automated loading of Translations on startup

[RedMser]

Forked version allows Project Settings to contain .ftl files like normal. This does not work for default builds, see #11.

There are code workarounds for loading translations, so it's probably fine. Maybe could introduce a helper function which recursively finds all *.ftl files in the project and loads them? Could optionally filter by locale, or path glob.

(This would also make .ftl files show in the translation picker dialog - no need to do anything else)