3d bug fix, add more effect, and others

Fixing #274 
1. Fix 3d effect for off-screen-nav (preview http://20140510-effect.gweb.io/off-screen-navs.html)
2. Added minimise then flip
3. Moving the staggering li amount to variable, allow customization for number of li items
4. Reduce 50 li items to 15 items, reduce css file size.
5. Added missing semi-colon in JS files;
6. Remove geometry from minimise then reveal/flip. (this css-lib should be ui-less)