FEDX-117

- Update to latest version of watchdog.
- inotify doesn't work on nfs share in devstack. Use polling instead.
- Some editors (vim) do not trigger modify events in their default
  configuration. Rebuild assets on all filesystem changes, and debounce
  when changes happen too quickly.

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

FEDX-121

The previous approach for handling NPM assets was
to symlink them into the static directory. This appeared
to cause trouble with the asset pipeline where the files
in question were not installed and then old versions were
picked up instead.

This change instead copies NPM libraries to a new
static directory so that the pipeline can consume them
as with any other file. This new directory is added to
.gitignore so that the files don't get accidentally
checked in.

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

Sass compilation is no longer dependent on Ruby, so we are
removing its dependencies.

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

This is a squash of 38 commits ending with
5b080f979d692804452400ac5bed9b17c50b001e

This is the default in 3.2, but will need to be explicitly stated in
Sass 3.4.

Also, added a --force parameter to compile_sass to make it easier to see
what warnings are current.

* adding in missing web certs Sass/CSS asset settings
* updating .gitignore

Also reconfigured paver to compile Sass into CSS directories

- 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

As part of the unification of verify later/now, the take photo page needs to list the verification requirements.

XCOM-254

There are now folders under static that have sass that should not be compiled
as a part of our asset pipeline,  they were getting pulled in because the wildcard
for `SASS_UPDATE_DIRS` was too broad.  This update makes it more specific for most
folders but leaves it broad for the common folder where the xmodule has its own sass
that needs compiling from a non-standard location.

This reverts commit b8184d18.

[second attempt which addresses bug building Studio]

This reverts commit 1d6fceda.

Respond to review comments:

- Rename build and config files for consistency between lms/studio.
- Fix merge conflicts with lms require config.
- Devstack uses optimized pipeline to skip require JS optimizer step
- Add tests for render_require_js_path_overrides

Including:

* Change path for mongo_metadata_inheritance to use unique temp dir
* Update SASS_CACHE_PATH with thread-safe temp dir
* Remove hard coded directory reference for grades download tests
* Remove hard coded directory reference for direct mongo test

Note: this requires SASS 3.3+ so do ```bundle install```