Instead, use a class attribute to define test behavior. This allows for
easier addition of new mixins over time.

French ugettext method was being monkey-patched with a "XYZ " prefix in
all tests. This introduces a context manager to guarantee that the
function reverts to its original state after the unit test has ended
(successfuly or not).

* mattdrayer:  Latest proto code
* mattdrayer:  Add translation.py
* asadiqbal08: Xblock translation ugettext update, remove translation.py
* mattdrayer:  Additional I18N work -- starting to see some translations!
* asadiqbal08: Trying to make xBlock message catalog files path dynamic
* mattdrayer:  Remove unnecessary modifications
* mattdrayer:  Cleaned up implementation
* mattdrayer:  Moved import statement
* asadiqbal08: update as suggested
* asadiqbal08: xblock its own domain
* asadiqbal08: translation: secure none object
* asadiqbal08: pylint
* asadiqbal08: get locale from xblock
* asadiqbal08: update
* mattdrayer:  Determine XBlock locale path within runtime service
* mattdrayer:  Determine module location via the runtime
* mattdrayer:  Remove ModuleI18nService reference
* asadiqbal08: override the service in studio
* asadiqbal08: remove import
* asadiqbal08: update the Modulei18nService
* asadiqbal08: update the Modulei18nService
* mattdrayer:  Remove redundant __class__ reference
* asadiqbal08: update the docstring
* asadiqbal08: tests
* mattdrayer:  Remove specific ugettext override from ModuleI18nService
* mattdrayer:  Move service operation to base class
* mattdrayer:  Address quality violations
* asadiqbal08: Investigating the test failure issue on jenkins and solved
* asadiqbal08: First utilizing the parent class method
* mattdrayer:  Use recommended callable approach
* asadiqbal08: remove unused code
* asadiqbal08: Updated the test to use cms preview module system runtime in order to get i18n service.
* asadiqbal08: Pylint quality
* asadiqbal08: update the service call to check xblock declarations
* asadiqbal08: update doc string
* asadiqbal08: i18n callable test in studio
* asadiqbal08: test lms runtime for modulei18n service
* asadiqbal08: add doc strings
* asadiqbal08: Rename locale and domain to Flask-Babel convention

for visual indent

indentation of opening bracket's line

Refactor get_parent_locations STUD-1663

This commit adds all of cms.

These keys are now objects with a limited interface, and the particular
internal representation is managed by the data storage layer (the
modulestore).

For the LMS, there should be no outward-facing changes to the system.
The keys are, for now, a change to internal representation only. For
Studio, the new serialized form of the keys is used in urls, to allow
for further migration in the future.

Co-Author: Andy Armstrong <andya@edx.org>
Co-Author: Christina Roberts <christina@edx.org>
Co-Author: David Baumgold <db@edx.org>
Co-Author: Diana Huang <dkh@edx.org>
Co-Author: Don Mitchell <dmitchell@edx.org>
Co-Author: Julia Hansbrough <julia@edx.org>
Co-Author: Nimisha Asthagiri <nasthagiri@edx.org>
Co-Author: Sarina Canelake <sarina@edx.org>

[LMS-2370]

Move index access into the url
Move course creation into the url
Add helper methods for testing to serialize json data and set accept header.

collection names

Instead, we use XModule field default values when creating an empty
XModule. Driven by this use case, we also allow for XModules to be
created in memory without being persisted to the database at all. This
necessitates a change to the Modulestore api, replacing clone_item with
create_draft and save_xmodule.

fix broken tests. Also drive by fix for the sporadic failure on tests which may go to a textbook page. The URL formatting was incorrect in the test