VID-1482 lazy loading VET messages

Lazy loading js messages for VET and code cleanup. 

This is the main commit https://github.com/Wikia/app/commit/b718126e0c3bf5cef541cca3e951565e658866e7

also https://github.com/Wikia/app/commit/056287543313dfc72ecc18f97ba0cd331516492b