* The LMS now also monkey-patches
xmodule.x_module.descriptor_global_handler_url and
xmodule.x_module.descriptor_global_local_resource_url so that we can
get LMS XBlock URLs from the DescriptorSystem. That functionality is
needed in the block transforms collect() phase for certain XModules
like Video. For instance, say we want to generate the transcripts
URLs. The collect phase is run asynchronously, without a user context.
* The URL handler monkey-patching is now done in the startup.py files
for LMS and Studio. Studio used to do this in the import of
cms/djangoapps/contentstore/views/item.py. This was mostly just
because it seemed like a sane and consistent place to put it.
* LmsHandlerUrls was removed, its handler_url and local_resource_url
methods were moved to be top level functions. The only reason that
class existed seems to be to give a place to store course_id state,
and that can now be derived from the block location.
* To avoid the Module -> Descriptor ProxyAttribute magic that we do
(which explodes with an UndefinedContext error because there is no
user involved), when examining the block's handler method in
handler_url, I made a few changes:
** Check the .__class__ to see if the handler was defined, instead of the
block itself.
** The above required me to relax the check for _is_xblock_handler on the
function, since that will no longer be defined.
90% of this goes away when we kill XModules and do the refactoring we've
wanted to do for a while.
Make the course URL pattern more generic.
Comment newly added functionality.
Fix quality issues.
Address two lint errors, with regex and variable naming.
Changed how we access course_key and course_id.
Replace another instance of self.course.id.to_deprecated_string()
Remove unused import, add missing one.
Improve how the ccx key is extracted from the URL
Use resolve() instead of os.path to get the course_id.
Remove the granting of staff access to coaches.
The update (PUT) endpoint now supports creating new CreditCourse objects in addition to updating existing ones. This functionality greatly simplifies the logic needed by consumers (e.g. the Course Administration Tool) to create or update CreditCourse objects.
ECOM-2524
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
