Running Builds Icon Animated for feedback to user page is live updating

This issue is a continuation if a discussion here: https://gitlab.com/gitlab-org/gitlab-ce/issues/5983#note_16783212

Mainly the point is to give the user feedback the actual page representing the build statuses is live updating.

it should be a loading indicator that represents indeterminate progress

speed can be adjusted

Live Demo

2016-10-12_12.50.33

know that the current visual is quite big and in your face.

The final result should not be distracting or messing with your attention at all and be a very subtle hint.

cc: @markpundsack @tauriedavis

Many arguments can be read here https://gitlab.com/gitlab-org/gitlab-ce/issues/5983#note_16783212

This issue is one to perhaps tackle later on.