Added login route on UserController and login test on UserControllerTest
Added signup functionality
Fixed some conflicts during rebase. Changed bootstrap UI theme.

Conflicts:
	bower.json
	server/schemas/SkillsSchema.js
Fix error during testing after rebase from upstream.
Change bootstrap theme to united
Enhance UX a little on the admin dashboard
Fix error after merging conflictss

Conflicts:
	app/scripts/controllers/AppController.js