https://openedx.atlassian.net/browse/TNL-5008

This reverts commit 5db58c00.

This reverts commit 5db58c00.

TNL-4449

MA-2189

MA-2305

MA-2305

* 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

- Remove escaping in display_name_with_default
- Move escaped version to deprecated display_name_with_default_escaped
- Does not include any other changes to remove double-escaping

Thanks to agaylard who initiated this work:
https://github.com/edx/edx-platform/pull/10756

TNL-3425

The cache uses the bookmarks.XBlockCache model.

TNL-1945

TNL-1957

This will make it much easier for us to slice courseware requests by
organization and course in Insights performance analysis.

There's no need to use a string literal in setattr, delattr, or the
two-argument form of getattr.

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

The only time it should include the suffix is when the handler is
explicilty "xmodule_handler", meaning it's an old-style handler
that routes everything. For example, Capa uses one handler for
all its AJAX requests, and only differentiates actions based on
suffix ("get", "problem_check", etc.).

What prompted this change is that LTIDescriptor defines a handler
"lti_2_0_result_rest_handler" which encodes user-specific
information into the suffix. This is a perfectly valid thing to
do, but it blows out the number of named transactions in our
metrics.

Entrance Exam.

unit test to check presence of entrance_exam_passed

changed based on Matt's feedback

changes after Asad's feedback

Following have been done
1- Change the structure of the course navigation Menu HTML
2- Add some basic styling
3- Add basic JS for html rendering
4- Update tests according to new structure

AC-76

New classes for the return type, and changes to the has_access function and tests to make them compatible.

Skipped 'print' statement violations, as print() is Py3k syntax.