English level basic support on list page,
Simple support of employee page,
List loader rebuild and change strategy.
Registered jquery plugins on require.js config.
Merge branch 'alan' into develop

Conflicts:
	src/main/java/com/exadel/studbase/web/controller/LoginController.java
Some loader fixes
Reformat function of role checking
Merge branch 'develop' of https://github.com/alexey-kozlenkov/ExadelPractice into develop