added check access component
added groups management
added list of users for group
implemented part of security application
Merge branch 'master' of github.com:slegostaev/easyReg into frontend

Conflicts:
	app/controllers/DoctorsController.java
	app/controllers/UsersController.java
	app/views/index.scala.html
	app/views/login.scala.html
	app/views/settings/tabMenu.scala.html
Created main header and styles for Settings