Added setting to enable/disable library indexing + moved is_index_enabled into search indexer classes
Added task and signal to fire library reindex

Search indexer is not bound to any library modifications, so tests fail - this is expected.

Added name to the authors list

MA-318, change edx video id to video id

Add course-specific URL overrides for social sharing icons on student da...

- sharing enabled for custom URLs only if URL actually specified

SOL-570 Remove djangotracker from common imports - merging

Added more precise alerting to video beacon experiment.

[Dependencies] Upgrading oauthlib from 0.6.3 to 0.7.2

i18n fix in studio

Better i18n for LMS

fix I18N errors in business order confirmation email

ECOM-1183 fixing the

1. Fix the broken `gettext()` call in `courde_detail.js`
2. Change the string to avoid Transifex misunderstand the pattern '% o' in `checklist.underscore`.
3. Embed the `{filename}` part inside the string in `transcripts-choose.underscore` to provide better i18n flexibililty.
4. Remove all the call of `gettext()` and `${_()}` inside the `mock` directory to aovid mis-extraction by pybabel. (It seems that the `mock` directory is soly used in test? So the strings in this directory need not to be extracted and translated?)
5. The unicode char `\u2014` will trigger a bug inside pybabel which makes the extracted string untranslatable, so remove this char.

Combine sentences in several pages for better translation.

Fix typo: Certfificate -> Certificate

MIT CCx (was Personal Online Courses)

Remove duplicated course listings template code on the student dashboard.

fix for making sure all descriptor fields are always available for course descriptors despite module_class tricks

add required fields to cache data for tests

use a different strategy to mock up the get_children method

Switch to font awesome icons, to fix issue with toggling collapsible sections of the schedule in ccx coach dashboard

Ensure access check takes place after descriptor is bound to the user, or field override checks will never happen

add doc strings; fix pep8 warning
address some minor issues brought up by the code review process

Original Commit Messages:

use edx's own get_parent method, rather than our own.

add field to unique constraint to avoid MultipleObjectsReturned in case of multiple browser clicks on submit

fix 0011 migration, inherit from TimeStampedField and add composite index (migration only)

fix bug where adding an already registered user to a ccx would cause a crash due to an undefined variable

add assertNumQueries tests to test modules where override field providers are used

remove unnecessary teardown

implement recommended style for checking empty list

import utility methods rather than use duplicate code

added comment explaining date conversion to string for json

add logging for invalid users or emails when enrolling students

add comment about xmodule user state

avoid using get_or_create, which seems to be causing a race condition on schedule change save

relocate badly placed edvent handlers to fix multiple submit problem

Use in tabs and other code to show or hide ccx coach tab depending on if the user has the coach role or not

Final official name is Custom Courses for EdX (CCX), rename all code to remove previous name.

Rename the FEATURE constant used to identify this feature

Rename the middleware for the CCX change

rename the constant used for storing the current poc id on the session.

rename the _PocContext threading local

rename the override provider in all places where it is referenced

`PersonalOnlineCoursesOverrideProvider` -> `CustomCoursesForEdxOverrideProvider`

generally rename symbols from overrides.py to replace `poc` with `ccx` where possible without changing model names or attributes

rename more symbols from poc to ccx
rename util functions from app utils module

general symbol renaming poc -> ccx in views.py and related url changes

Rename the coach role wherever it is used.

reword poc_coach to ccx_coach

UI rename

replace POC with CCX globally

template context variable renamed

rename poc_ to ccx_ in urls and all related locations (views, js, scss etc)

remove pocs migrations

Final massive renaming, including models.  Re-built migration.

cleaning up a few tailing references

Fix reference typo in schedule template JS

undo modifications made on the fly in test setup to ensure that our tests are properly isolated from the rest of the system tests.

Fixes jazkarta/edx-platform#38

Clean up some leftover strings and comments

fixing more strings and comments in python files

fix a naming error in the schedule tab that was causing problems in deleting courseware items.

Fixes jazkarta/edx-platform#36

updating tests and utility code to match changes in infrastructure from latest rebase