Fixes from Issue #167

This fix some issues mentioned in here https://github.com/h5bp/Effeckt.css/issues/167.

Now positional modal works, modal 3d effect and some modals improvement.

After a couple of days trying to figure out how to make page transition better need to have a better structure, because of my structures and other failed intent i understand it need more job on other element to adapt.

So I disabled page transition until I manage to make it work as I think it's better or until anyone could make it right.