Display an image response in the course staff debug page
Implement leaderboard feature
Merge pull request #586 from edx/will/leaderboard-squashed

Implement leaderboard feature
Add Andrew Dekker to the AUTHORS file
Small developer doc formatting fixup
Merge pull request #584 from edx/will/image-staff-debug

Display an image response in the course staff debug page
Merge pull request #587 from edx/will/small-doc-fixup

Small developer doc formatting fixup
Update i18n messages
Merge pull request #588 from edx/will/i18n-syncup

Update i18n messages
Be even more flexible about boto
Merge pull request #589 from singingwolfboy/any-boto-will-do

Be even more flexible about boto
Reverting scipy, boto, and ease versions
Wrap all assessment and part creation in a single transaction
Merge pull request #591 from edx/sanchez/revert-scipy-req

Reverting scipy, boto, and ease versions
Fix 500 error on progress page with rubric that has 0 points
Merge pull request #595 from edx/will/ora-780

Fix 500 error on progress page with rubric that has 0 points
Made HTML strings not auto-escape, and converted numbers to strings for concatenation
Merge pull request #593 from edx/sanchez/wrap-assessments-in-transactions

Wrap all assessment and part creation in a single transaction
Merge pull request #597 from edx/grady/i18n-round-two

Fixed our (my) i18n headaches
Instructors can edit response feedback prompt text

Before, instructors were unable to edit the feedback prompt text ("I noticed that
this response...") displayed in the response box asking a student to provide feedback
on the peer responses they received.

To allow instructors to edit this, I've added an editable xml element (default_feedback_text).
The text within the element defaults to "I noticed that this response...," but an instructor
can change this text to whatever he or she wants by editing the text within the xml element.