Merge branch '17702-running-icon' into 'master'

Change running status color to blue; update icon to spinner

## What does this MR do?
Changes running status color to blue    
Updates icon to spinner to differentiate from `pending`

## What are the relevant issue numbers?
Closes #17702   
Part of https://gitlab.com/gitlab-org/gitlab-ce/issues/18920

## Screenshots (if relevant)
![Screen_Shot_2016-07-12_at_4.34.48_PM](/uploads/8f6bb36a7a8fe99db1ec1ef8e9db6388/Screen_Shot_2016-07-12_at_4.34.48_PM.png)


See merge request !5222