Update to Bootstrap 2.3.1 and Cosmo 2.3.1

Signed-off-by: Stuart Olivera <stuart@stuartolivera.com>
Move backbone code to separate files

Signed-off-by: Stuart Olivera <stuart@stuartolivera.com>
Fix row-fluid selector

Signed-off-by: Stuart Olivera <stuart@stuartolivera.com>