resolve languages
pending flag in learn mode

Conflicts:
	app/scripts/controllers/main.js
beatify and least_learned set param
hide lang select on learn mode in progress
monkey patch swapLangs in learn
true sort
edit while filter fixed
sort modes
stable/unstable sort
-least learned checkbox
link to stable
features
filter bars beautify
filter bar plchldr
bugfix
mocks
units crud works
tagging unit works but without persistance
filter issue
tagging units works