Set up a UI localization project

[akerbeltz]

As Blueksy grows in popularity, sooner or later we'll have to look into localizing the UI and it would seem prudent to at begin the process sooner than later because there are issues relating to localization that affect how some of the code must be written or the need for new code/features. I'm not a developer but a very active localizer, so off the top of my head, things such as

• plural formatting
• handling of placeholders (preferable to concatenation), but bearing in mind languages with complex grammar
• spacing/space issues
• locale selection (force locale works for many but not all locales, plus user choice may be at odds with system locale)

are all issues that cannot be handled just at the translation end.