update/cleanup bootstrap 3 icon usage

There are some old instances of <i class='icon-ok'></i>
and glyphicon in the code.
We should be using font-awesome icons instead.

Change-Id: I5269d947716854274a9b6c27b903b01606a787d3
Closes-Bug: #1367476
Merge "update/cleanup bootstrap 3 icon usage"