Plug new authentication front app to backend app

This PR plugs authentication front to the backend front
I move old templates from login to login-old in template directory
I move old skins from longin to login-old in sins directory
To keep a track just in case.

To build css through less go to /www/skins/login/less directory then run make, you need first to install required dependencies.

To do so go to /www/skins/login/assets/bootstrap directory the run npm install