Updating to latest stable of ora2
Added "Edit in CMS" links throughout courseware

Conflicts:

	lms/djangoapps/courseware/views.py
	lms/templates/courseware/course_about.html
This makes the metrics tab "bars" clickable.

  Clicking on any of the bars displays a list of students for that
  particular action (either opened the subsection or attempted the
  problem).
  Students are listed for the sub-sections.
  Students, grade and percent are listed for the problems.
  The on-screen list displays only the first 250 students with
  an overflow message if there are more students than that.
  The csv download lists all students.