Upgrade to bootstrap 2.3.1 and angular 1.0.5

EDIT: Bootstrap 2.3.1 is now available.

There's a caveat with bootstrap 2.3.0, such that you probably don't want to merge this pull request until bootstrap 2.3.1 releases.

The version of bootstrap is slightly modified from the version that's publicly released (hence waiting for 2.3.1).
See this bootstrap issue for details: https://github.com/twitter/bootstrap/issues/6835

Also a few tests fail because of the spy's on $.fn (for tooltip and popover) appear to not properly call through to the original object. I've got a github issue up here: https://github.com/testacular/testacular/issues/362

Just wanted to post this up so that no one else goes through the same trouble trying to figure stuff out.