ECOM-4325

* mattdrayer: Remove individual JWT settings
* mattdrayer: Add settings defaults to JWT_AUTH calls

This reverts commit a796b563.

Conflicts:
	lms/envs/common.py
	openedx/core/djangoapps/theming/models.py
	pavelib/assets.py
	pavelib/paver_tests/test_assets.py

This setting is necessary to avoid django-storages applying a security token to S3 URLs.

ECOM-4081

We use S3 for a number of uploads. Boto, by default, includes a auth querystring on the returned URLs. Since these uploads are public, there is no need for this querystring. Additionally, the long length URLs cause problems when API consumers need to store the URLs. This commit resolves this problem by removing the auth querystring.

- Updated to latest versions of boto and django-storages-redux packages
- Added AWS_QUERYSTRING_AUTH setting to remove the querystring values

ECOM-4081

We use S3 for a number of uploads. Boto, by default, includes a auth querystring on the returned URLs. Since these uploads are public, there is no need for this querystring. Additionally, the long length URLs cause problems when API consumers need to store the URLs. This commit resolves this problem by removing the auth querystring.

- Updated to latest versions of boto and django-storages-redux packages
- Added AWS_QUERYSTRING_AUTH setting to remove the querystring values

ECOM-4081

TNL-4336

Prevents start date alone from being used to filter out categories in self-paced courses during construction of the category map. ECOM-4017.

Prevents start date alone from being used to filter out categories in self-paced courses during construction of the category map. ECOM-4017.

ECOM-3940

TNL-4336

ziafazal: improvements need for multi-tenancy
ziafazal: fixed broken tests
ziafazal: no need to add setting in test.py
ziafazal: added hostname validation
ziafazal: changes after feedback from mattdrayer
ziafazal: fixed branding and microsite broken tests
ziafazal: make STATICFILES_DIRS to list
ziafazal: added theme directory to mako lookup for tests
ziafazal: added more protection in test_util
saleem-latif: Enable SCSS Overrides for Comprehensive Theming
saleem-latif: Incoporate feedback changes, Correct test failures, add tests and enable theming for django templates
saleem-latif: Correct errors in python tests
mattdrayer: Fix invalid release reference
mattdrayer: Update django-wiki reference to latest release
saleem-latif: Update Theme storages to work with Caching, Pipeline and collectstatic
saleem-latif: Incorporate feedback changes
mattdrayer: Pylint violation fix
mattdrayer: Fix broken pavelib test

TNL-2444

HOSTNAME_MODULESTORE_DEFAULT_MAPPINGS,

Resolves an issue preventing students in self-paced courses from seeing all available discussion modules. ECOM-3733.

There is one DB where we do not want it specified since transactions
on the CSMHE table when we aren't atomic across databases isn't a win.

This abstract class contains most of the fields (aside from the id and
foreign key to StudentModule that the subclasses need to manage).  It
also provides a get_history method that abstracts searching across
multiple backends.

Move router code to openedx/core
We need to use it from cms and lms.
Ensure aws_migrate can be used for migrating both the lms and cms.

Handle queries directed to student_module_history vs default and the
extra queries generated by Django 1.8 (SAVEPOINTS, etc).

Additionally, flag testing classes as multi_db so that Django will
flush the non-default database between unit tests.

Further decouple the foreignkey relation between csm and csmhe

When calling StudentModule().delete() Django will try to delete CSMHE
objects, but naively does so in the database, not by consulting the
database router.

Instead, we disable django cascading deletes and listen for post_delete
signals and clean up CSMHE by hand.

Add feature flags for CSMHE
One to turn it on/off so we can control the deploy.
The other will control whether or not we read from two database tables
or one when searching.

Update tests to explicitly use this get_history method rather than
looking directly into StudentModuleHistory or
StudentModuleHistoryExtended.

Inform lettuce to avoid the coursewarehistoryextended app

Otherwise it fails when it can't find features/ in that app.

Add Pg support, this is not tested automatically.

This is a clone (copy) of CSMH's declaration and methods with an added
id of UnsignedBigInAutoField

We should be able to delete the save_history code, but needs testing.

Add error logging when capa failures happen

Put StudentModuleHistory into its own database

Bump out the primary key on CSMHE

This gives us a gap to backfill as needed.
Since the new table's pk is an unsigned bigint, even for people who don't
consolidate CSMH into CSMHE, the lost rows are unlikely to matter.

Remove StudentModuleHistory cleaner

ECOM-3638

The previous logic was a convoluted way of doing the same thing, and
has already led to one bug. Instead of hoping that the bugs are ironed
out now and that future devs maintain this logic properly, let's just
set a real cutoff date.

ECOM-3419

This reverts commit 46df4545, reversing
changes made to 039e6cdf.

ECOM-3419

 The CCXCon app is used to push course updated to the CCXCon
 externale service.

Adding the declaration of the settings object to openedx.conf to be able to import it from a nicer location

Resolving quality violations

Merging dicts with the settings definition when they exist in the microsite configuration

Using a cache to improve the perfomance of quering any dictionary in the microsite definition

Ignoring the invalid-name pylint warning since the names must be kept thsi way to stay the same as the ones in django.
Removing the default dict argument as per https://docs.python.org/2/tutorial/controlflow.html#default-argument-values

Extracting the implementation of the microsite to a selectable backend.

Leaving the function startup.enable_microsites for backwards compatibilityy

Adding a database backend

Using a cache to improve the perfomance of quering any dictionary in the microsite definition.
Changed the database backend so that it extends the settings file backend and removed all the unnecessary methods.

Using the backend provider for the get_dict function

some tweeks and some initial unit tests

Using getattr as a function insteal of calling the underlying __getattr__ directly

Adding an ModelAdmin object for the microsite model in the django-admin panel

refactor enable_microsites()

consolidate/refactor some shared code

add config to aws.py and add migration files

fix tests

Changes to get the backends to run after the refactor

add archiving capabilities to microsites. Also make a few notes about performance improvements to make

fix tests

Making the query to find if microsites exist in the database faster

add ORG to microsite mapping tables and some performance improvements

allow for Mako templates to be pulled from the database

fix tests

For the database template backend the uri of the template does not use the filesystem relative path

Fixing pylint violations

Added caching of the templates stored in the database

Fixing pylint errors

fix pylint

Clearing the cache on model save

Fixing pylint errors

rebased and added test coverage

rebased cdodge/microsite-improvements branch with master and added test
coverage

added missing migration

fix quality violations

add more test coverage

mattdrayer: Add microsite_configuration to cms.INSTALLED_APPS

added microsite settings to cms/envs/test.py

run session cookie tests only in LMS

fixed broken tests

putting middleware changes back

Preventing the template_backend to be called on requests which have no microsite

changes to address feedback from mjfrey

changed BaseMicrositeBackend to AbstractBaseMicrositeBackend

changes after feedback from mattdrayer

fixed broken tests and quality violations

Allowing the backend to handle the enable_pre_startup routine

Typos and docstrings

Adressing feedback

Fixing python tests

add comment to explain why we need enable_microsites_pre_startup()

Access tokens last 30 days by default (365 days for confidential
clients).  This can be customized with django settings.  Here we provide
hooks to inject those settings from a JSON env file.

MA-1955: Allow installations to customize OAuth token expiration times

ECOM-3318