Monkey patch django.db.models.options for faster cache expiry

Unit test speedups - Add context manager to SharedModuleStoreTestCase.

Speed up course listing tests

for use when a test class has a setUpTestData() method which uses
variables set up in the setUpClass() method.
Change base teams API test class to use the context manager.

Wrap whole test with several publish/unpublish in same bulk_op.

This test was creating 500 courses in about 2.5 minutes. Creating 10 courses instead allows the test to execute in 7 seconds.

Update migrations setup during Python unit tests

Display studio name properly on empty course page.

Revert "Registration: don't require terms of service if checkbox is hidden"

By default, migrations are applied as they always have been. Exporting DISABLE_MIGRATIONS=1 or passing --disable-migrations to Paver commands will create tables directly from apps' models.

Registration: don't require terms of service if checkbox is hidden

Test should wait for ajax calls to finish before checking the changes

Improve logging in certification generation

Fixed test_cancelling_redirects failing on Chrome

Dev user should be able to specify LETTUCE_BROWSER.

DOC-2703: replace instances of “courseware” in Advanced Settings help

Move rendering of capa problems inline

When capa problem rendering was moved to happen inline on courseware
page loads, we started executing many more Mako templates on sequences
with large numbers of thse problems. To help offset this, we're caching
the context generation (it showed up as the easiest piece of low
hanging fruit on profiles of the courseware index page).

[PERF-261]

Before this commit, calling the student_view on a capa problem would
cause it to render an empty placeholder <div>, wait for the
DOMContentLoaded event to be fired, and then make AJAX requests to the
the problem_get handlers to retrieve the HTML it needed to render the
actual problems. This can significantly increase the end user load
times for pages, particularly when there are many problems in a
vertical.

This commit takes a very conservative approach and has the server side
add the rendered HTML into a new data-content attribute on the <div>
enclosing the problem. When Capa's JS initialization runs, it grabs
from that data-content attribute rather than reaching over the network
for an AJAX request.

I had attempted to make it somewhat smarter and push the rendered
problem straight into the document instead of relying on the
data-content attribute. This was faster, and should be our long term
goal. However, it caused odd bugs, particularly around MathJAX
rendering, and I never quite tracked the issue down. I'm still going
forward with these changes because it's significantly better than the
current situation that students have to deal with, and we can make the
JS more performant in a future iteration.

[PERF-261]

Use has_configuration_set() during microsite initialization

Revert "Pass DOM element, not jQuery object to XBlock initialisation."

Weekly ORA release

Delegating the conditional to the has_configuration_Set method, which is overriden by the database backend, so the enable_pre_startup works well for both backends.

Adding tests

Fix quality issues

Course Overview migrations fix: Readd the Facebook URL field

Now installing without `-e`, and moving to a fully released 1.0.0 version
Also includes updating edx-submissions to a 1.0.0 release.

Syncs preface with edx-doc repo version

Avoid MultipleObjectsReturned errors with LoginFailures