Moves ENABLE_INSTRUCTOR_EMAIL and REQUIRE_COURSE_EMAIL_AUTH from settings files
to admin-accessible configuration models. This allows for the bulk email settings
to be modified without a new AMI deploy. See TNL-4504.

Also updates tests:
    -python tests mock out the new configurations in place of the old settings
    -lettuce test has been moved to bokchoy
        (note that there was some loss of coverage here - the lettuce tests had
        been doing some voodoo to allow for cross-process inspection of emails
        messages being "sent" by the server, from the client! In discussion with
        testeng, this seems outside the realm of a visual acceptance test. So,
        the bokchoy test simply confirm the successful queueing of the message,
        and leaves the validation of sending messages to the relevant unit tests.)
    -bok choy fixture has been added, to replace the settings in acceptance.py
    -lettuce and bok choy databases have been updated to reflect the backend changes

The new default is to have bulk_email disabled, we'll need to call this out in the
next OpenEdx release to ensure administrators enable this feature if needed.

This reverts commit 266f593d.

This reverts commit a796b563.

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

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

This reverts commit 954dae58.

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

Collectstatic failed in production when comprehensive theme contained custom css files.
This patch fixes that problem by removing ComprehensiveThemeFinder from STATICFILES_FINDERS
and ComprehensiveThemingAware mixin from STATICFILES_STORAGE.

Comprehensive theme static dirs are added to the top of the STATICFILES_DIRS entry,
which means that the default django FilesystemFinder will find theme static files,
and since the theme folder is at the top of STATICFILES_DIRS, theme files will take
precedence over default LMS/CMS static files.

This change means that theme static file URLs are no longer prefixed with themes/<theme-name>/,
but since we currently only support one comprehensive theme at a time, that shouldn't be a problem.
If/when we want to make the choice of a theme dynamic per-request (microsites?), we will have to
bring custom theme finders and storage mixins back, but for now, we don't need them.

ECOM-3419

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

ECOM-3419

Please note that this is a squshed commit and the work of:
Symbolist, macdiesel, nedbat, doctoryes, muzaffaryousaf and muhammad-ammar

Squashing private settings import errors leads to wasted developer time when developers expect settings to be in place, and they aren't. This change only loads private settings if the private.py file exists. If there is an error during the import of that file, the application will not start.

ECOM-2653

TNL-3137

TNL-3137

TNL-3137

TNL-3137

TNL-3137

TNL-3137

* asadiqbal08/SOL-1058: Add edx-organizations to certificate web view
  * Support organization logo asset management
  * Remove organization fields from Studio certificate configuration model

* SOL-981 pull request feedback fixes

When running locally, XBlocks which access third-party software no longer
cause server errors.

Because devstack inherits from aws, the HTTPS flag was implicitly set to 'on'.
This meant that XBlocks attempted to use SSL when dealing with third-party
components like LTI.  Since SSL is not enabled on devstack, this caused server
errors whenever these features ran.

TNL-2487

ECOM-1858

ECOM-1524

Remove the DjDT profiling panel from devstack.py. It appears to cause horrendeous performance issues, while offering very little benefit.

add flag to lms/envs/common

update edx-search release tag

- SOL-465: Initial implementation of certificates web view and signatories (names/titles)

- SOL-718 Close button is working properly

- SOL-801 Backbone Signatories Modeling

- SOL-803 Underscore template: Editor (Add)

- SOL-802 Signatories: Underscore template - Details

- SOL-804 Signatories: Underscore template: Editor (Edit)

- Add signatory delete Django view

- SOL-805 Signatory editor (Delete)

- Add Coffeescript router

- SOL-716 Jasmine Tests

- Added missing minified JS library

- client side validation of signatory fields

- SOL-390 signatories names

- Remove obsolete extends Sass files

- input maxlength limiting for signatory information

- SOL-389: Course title override

- SOL-466: Add capability to upload digitized signatures in Studio

- ziafazal: fixed css for upload signature image

- ziafazal: completed deletion of signature images

- UX-1741: Add initial static rendering/styling for Open edX web certs
  * creating new global static dir
  * adding static version of edX UX pattern library assets
  * adding web certificates static assets
  * adding static (+abstracted) web certificates rendering
  * creating two tiers of rendering (base + distinguished)
  * providing sample assets for certificate rendering
  * supporting RTL layouts
  * adding certifcates assests to edX static asset pipeline
  * temporarily hiding the mozilla open badges share action
  * wiring print button to print view/page
  * fixup! addressing conflict artifact in valid cert template
  * fixup! adding missing %hd-subsection sass extend + components comment clean up
  * fixup! correcting pattern library .hd-4 font-weight value

- SOL-468 Linked Student View for Web View Credential

- SOL-467: Add capability to upload organization logos for certificates

- SOL-391 / SOL-387: Signatory related info (assets) in certificates web view

- kelketek: Fixes for static asset collection in certificate HTML view.

- SOL-398 Web View: Public Access

- mattdrayer: Post-merge branch stabilization

- catong: Initial changes to Studio template and Help config file

- ziafazal: Branch stabilizations

- SOL-387: Display organization logo on LMS web view

- talbs/mattdrayer: Branch Stabilizations

- talbs: converting backpack action to use a button HTML element

- talbs: revising placeholder assets + their rendering in cert view

- mattdrayer: Username web view wireup

- SOL-386 Certificate Mode Previews

- SOL-905: Make organization logo and signatory signature uneditable

- SOL-922: Improve test coverage

- SOL-765: Add LinkedIn sharing

- [marco] temporary styling adjustment to account for smaller linkedin share image / fake button

- SOL-921: Address hardcoded template items

- SOL-927: Deleting certificate should delete org logo image also
  * updated invalid template
  * removed hr
  * fix invalid certificate error

- clrux: Add i18n to certificate templates and partials

- mattdrayer: Pylint violations

- SOL-920 Certificate Activation/Deactivation

- mattdrayer: Added LMS support

- SOL-932: Fix preview mode support in certificate view

- SOL-934: Fixed bug reported and broken tests

- SOL-935 removed the 'valid' word from web view title

- talbs: RTL support updates/fixes
  * revising certificate type icon/name vertical alignment
  * removing unused older certificate template
  * revising styling for message/banner actions
  * abstracting accomplishment type to use course mode + adding in honor/verified-specific placeholders

- mattdrayer: JSHint violations