Edited about page button widths to make 2 fit next to each other
Fixes issue with metrics tab click handlers
  Click handlers were not getting attached to DOM elements in some cases on slow running machines.
  Added logic to attach handlers when elements are ready and also made sure handlers
  are attached only once.
WIP: pass course name on queue

Conflicts:

	lms/djangoapps/certificates/queue.py
Merge pull request #3531 from edx/jrbl/certs_pass_course_name

Stanford only: pass course name on queue
Merging for our release to stage