Provide means for I18n locale components

[matthijsgroen]

Make a default way of working for having multiple translation files for a single locale, e.g.:

homescreen.en.yml, settings.en.yml

maybe even add smart loading through webpack that only a single locale file is included (omitting other locales when not used)

[pascalw]

@matthijsgroen I've been thinking about this.

I think there are two points to this:

• Having an out of the box solution to split up locales into multiple files.
• Loading only a single locale at a time.

First point shouldn't be too hard, but the second point is probably more difficult. In order to load only a single locale at a time we'd need to make sure that each language generates a separate JS bundle and load that asynchronously. That introduces all sorts of issues because loading that bundle could fail or take some time after the initial assets are loaded. Do you have any thoughts on this?