Update Twitter Bootstrap 3.0.0-RC1. Closes #72.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.0'
Clean-up syntax based on 55bdd7e commit.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.0'
Tweak user navbar-form button CSS.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.0'
Improve safe mode notification using the new Orchestra\Messages::extend() API

Signed-off-by: crynobone <crynobone@gmail.com>