ANTARCTICLE-119 Article Translation

First UI implementation for article translation
ANTARCTICLE-119 Article Translation

Tge additional first UI implementation for "Article Translation" user story
ANTARCTICLE-119 Article Translation

Changed language combo box
ANTARCTICLE-119 Article Translation

List of languages is stored in enum
Merge branch 'ANTARCTICLE-119'

Conflicts:
	app/assets/stylesheets/styles.less