Fix missing hyphens.
Add German (Switzerland) locale.
Add English (UK) locale.
Fixing name of locale.
Activating language fallbacks to save space and effort on language variations (e.g. German (Switzerland) vs. German (Germany)
Unfortunately, only Rails' native I18n seems to support fallbacks. Other systems, such as gettext, don't.

This reverts commit fb07448cb01f6136b13848e295ddd3c1e071c08e.