Fix input validation icon misalignment.

Changed them from Font-Awesome back to Bootstrap's default Glyphicons.
Fix question comments count using total comments.
Styling updates following merge, testing
Fixed only able to import to one course
Merge branch 'demo' of https://github.com/ubc/acj-versus into demo
Clearfix to fix styling of answers and replies
Update add question screen to separate data into two fieldsets
Fix answer flagging on evaluate screen
Fixed showing full name to instructors
Hide evaluate actions and feedback for canManagePost roles
Remove test criteria and tag
Add mathjax directive to questions box and list.
Fix gravatars for comments
Changed the required # of evaluations to use floor instead of ceil

I've also fixed showing fullname to instructors/admins on the
individual question page
Fix questions search box.

The search box was being hidden by ng-if when there's no questions
present. For some reason, this causes questionFilter to not be
registered in scope, might be because ng-if is left out of DOM at page
load. Switching to ng-show to hide the serach box fixes it.
Fix course search box.

Same problem as the course questions search box, swapped ng-if for
ng-show.