Travis - Adding Job to Travis to test asset precompile.
Dashboard: setting dashhead height to align widgets

Setting height of dashhead inside widgets so that the widgets line up
height-wise. This was some feedback from Katello/katello#2456
Merge pull request #2467 from ehelms/asset-precompile-test

Travis - Adding Job to Travis to test asset precompile.
Merge pull request #2459 from daviddavis/temp_1370881542

Dashboard: setting dashhead height to align widgets