Changed include_once to require_once

System classes are required to launch WityCMS
WDate implementation

WityCMS handles timezone for PHP and MySQL
Comments updated for v0.4.0
Added libraries/bootstrap-2.3.2
Added libraries/jquery 1.10.2 and 2.0.3
Installer uses new libraries folder
Added libraries/Bootstrap-Modal
Adapted Admin-Bootstrap theme to use libraries folder
Removed useless images in Admin-Bootstrap theme
Cleaned jquery in Note and added Bootstrap in Blank theme
Removed useless folder /admin in robots.txt
WRoute comments improved and fixed
Fixed bootstrap-responsive on Admin theme & span12 used in _blank theme
Simplified theme/_blank and note_plain.css

Bootstrap grid structure was not needed
Merge pull request #74 from Creatiwity/WDate

WDate implementation
Fixed last commit on WRoute
Merge remote-tracking branch 'origin/0.4' into news-wretriever

Conflicts:
	paths.php
	system/WCore/WMain.php