Added the reverse sort functionality for the volume langing page
Updated the koala sass to add up-caret class
Adding the tile view to be reverse-sortable
Added the reverse sort feature to all landing pages
Removing the href attr. from <a> tab to prevent unnecesary refresh
Merge branch 'develop' into GUI-196-reverse
Merge pull request #122 from eucalyptus/GUI-196-reverse

Gui 196 Adding reverse sort for landing pages