added gravatar

added gravatar functionality to account profile, allows for user
selection.
updated github url

updated github url + jquery version to 2.0.0 (not latest, to lock to a
version for compatibility)
Updated Twitter Bootstrap to version 2.3.2
Merge pull request #40 from kabadabra/master

Updated Twitter Bootstrap to version 2.3.2
Moving the notice about disabled registration into language file
Updating jQuery to version 2.0.2
Updating views to html5 and bootstrap

Updating few remaining views to bootstrap and html5.
Fixes #43

Updating twitter API version to 1.1
updating the readme
Update readme

Update readme with the twitter update date
Merge branch 'admin-panel' of github.com:AdwinTrave/A3M

Conflicts:
	application/controllers/account/account_profile.php
	application/views/head.php