Scale graphs

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Improve group views

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
twbs3 style for admin, tree, network, commits

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>