Charts: show commit duration instead of build

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

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Truncate long branch names

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

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