changed to proper mysql pass
separated AR models from controlers
added md5 and salt for user password. improved security on user creation
user model modifications
Merge remote-tracking branch 'origin/backend' into lvuiui-79

Conflicts:
	app/controllers/groups.rb
created and modified removed for all  backend models except users
Merge pull request #16 from vdanyliv/lvuiui-79

Lvuiui 79