Added warning about complex numbers to math expression input
Adding instructor dashboard documentation for student and grade download data.
don't show the add response button if responses are not allowed.

JIRA: FOR-452
instructor_task: Distribute extra items among subtasks of last query.

When creating an instructor task total_num_items may change between the
time it and the number of subtasks is calculated and the time the
subtasks are actually queued (all of this cannot happen in one transaction).
In such a case the extra items are distributed among the subtasks of the
last query.

LMS-2090
Merge pull request #2460 from edx/sylvia/documentation/BLD-787

Added warning about complex numbers to math expression input
Merge pull request #2458 from edx/ahodges-documentation-LMSdash

Ahodges documentation lm sdash
Converted <ol> to <div> to prevent a11y confusion.
Merge pull request #2396 from edx/usman/lms2090-instructor-task-transactions

instructor_task: Distribute extra items among subtasks of last query.
Updated bok choy page objects setup.py
Fix bug in url method of register page object
Add dist directories to gitignore
The default course CSS class should be empty string rather than None.
Doc Update for Component label in editable unit page

for STUD-1242
Merge pull request #2461 from edx/flowerhack/fix/csv-using-read-replica

Fixed 500ing CSV reports
Merge pull request #2452 from edx/will/pages-setup-script

Updated bok choy page objects setup.py
Allow author to cap enrollments in course

add a test case for enrollment caps

pep8 fix
Remove extraneous configuration
Make Studio load XBlock fragment js and css on the client-side

[LMS-1421][LMS-1517]
Make uses of quote_slashes always operate on encoded strings
Merge pull request #2428 from edx/will/i18n-test-results

Better test console reports; i18n XUnit results
Merge pull request #2304 from cpennington/less-initialization

Don't force modulestore initialization when running lms manage.py, only when running via the wsgi file
Merge pull request #1967 from edx/feature/cdodge/cap-num-enrollments

Add ability to cap number of enrollments in a course