update(version): update angular version to 1.2.14
update(version): update angular version to 1.3.0-beta.1
chore(homepage.js): fix stable version number
fix(index.html): show both the stable and unstable versions of angular
fix(index.html): move inline css for .hero-unit to external css file
fix(css): h1 headers no longer covered by navbar when using anchored links

e.g. http://angularjs.org/#the-basics
fix(download-branches): download by branch rather than stable/unstable

The download modal dialog box is now data driven based on a collection of
branches and builds.

The Twitter Bootstrap JS library has been replaced by pure AngularJS
from the AngularUI Bootstrap library. (It's so nice!)
fix(examples-tabs): Implement angular-ui tabs
refact(download-data): move download-data into its own file

Putting the download data into its own file, makes it easier to automatically
update the data when we do a release.
fix(index): cloak the downloadable versions till they arrive
update(version): update angular version to 1.3.0-beta.2
fix: links to cdn
fix: download link to 1.3.0-beta.2
refact(homepage.js): move filter function inside controller
fix(homepage.js): fix annotations compilation

Closes #101
Closes #100
fix(download-data): 1.3.x branch should not be coloured red
fix(download-data): branches should not be coloured at all
fix(download-modal): correctly wire up the tooltips
fix(download-data): improve the description of the release branches.
update(version): update angular version to 1.3.0-beta.3 for branch 1.3.*