Bootstrap 2.3.2

Hi,
Upgraded to bootstrap 2.3.2. Had problems with Modal's vertical alignment and commented out call to centerVertically(getElement()) in Modal.java:301.
Also introduced new attribute 'container' (parent element of Tooltip as of Bootstrap 2.3.2) to Tooltip.
Testing in my app and so far everything else looks good, however some further testing should be done.

Cheers,
Thomas