Updated Bootstrap 3 to RC2.
Updated HTML markup for Bootstrap 3 RC2.
Adjusted navigation markup according to the Bootstrap versions.
Append files by default.
Updated to Bootstrap 3 release version.

Removed Font Awesome in favor of using Glyphicons included in Bootstrap
3.
Updated jQuery version to 1.10.2.
Updated optional dependencies section.
Updated package version.
Updated alert class for Bootstrap 3.
Display a cancel button if the server-side validation failed. Fixes #2538

Replace label-important with label-danger (Bootstrap 3 change).