Cleanups

Remove unused imports and added blank lines to improve readability.
Fix Mozilla extension after the move to Pootle goals

Goals are now handled natively by Pootle, so no more shuffling of files
around.

Best viewed with --ignore-space-change
Remove whitespace in translatable text
s/on/for/
Fix for creating languages even when don't have specialchars
Add all available languages regardless of how complete is Pootle translation