Fix issue error message layout

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Fix label set during issue/mr creation

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Use label-branch css for MR branches info

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Style label-branch color

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

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Add test for createing issue with labels

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