Added login capabilites

QubalApp uses Django underlying  auth, sessions and cookies engine for
dealing with it.
Also a new login and landing it's been created for supporting it on
frontend
settings has been altered to include the django middleware
Formatted landing page

bootstrap.css -> New classes added.
landing.html -> Form login and register included + style format.
font-awesome.css included.
font-awesome-webfont.tts included.
Merge pull request #6 from radicalgraphics/sessions

Sessions