Changes to optimize the plus sign dropdown (quick create menu), trying to avoid
displacement of the box outside the upper navigation bar.
Prettified the plus sign.
Added Caret tu user and quick create.
	new file:   css/glyphicons-halflings-white.png
	new file:   css/glyphicons-halflings.png
	modified:   css/login.css
	modified:   css/style.css
	modified:   images/quickcreate.png
	modified:   tpls/_globalLinks.tpl