The only way to access the legacy courseware is now through the
Studio preview feature (and at some point, when the MFE supports a
preview mode, we can then remove even that).
This drops the courseware.use_legacy_frontend waffle.
Convert more tests from MONGO_AMNESTY to SPLIT modulestores.
This is in preparation for just wholesale denying access to Old
Mongo, so I either converted tests to split or just deleted some
test variants that were Old Mongo specific. (e.g. ddt lines)
It's long past time that the default test modulestore was Split,
instead of Old Mongo. This commit switches the default store and
fixes some tests that now fail:
- Tests that didn't expect MFE to be enabled (because we don't
enable MFE for Old Mongo) - opt out of MFE for those
- Tests that hardcoded old key string formats
- Lots of other random little differences
In many places, I didn't spend much time trying to figure out how to
properly fix the test, and instead just set the modulestore to Old
Mongo.
For those tests that I didn't spend time investigating, I've set
the modulestore to TEST_DATA_MONGO_AMNESTY_MODULESTORE - search for
that string to find further work.
Fixing 56 GuessedAtParserWarnings, in commit edx#24098
Background: BeautifulSoup automatically picks the fastest parser available. By default, it picks the "lxml" parser.
Per the [BeautifulSoup](https://www.crummy.com/software/BeautifulSoup/bs4/doc/#installing-a-parser) documentation:
> Beautiful Soup supports the HTML parser included in Python’s standard library, but it also supports a number of third-party Python parsers. One is the lxml parser. Depending on your setup, you might install lxml with one of these commands.
> Another alternative is the pure-Python html5lib parser, which parses HTML the way a web browser does.
Context: We changed two statements, one in lms and another in openedx. Both statements fire up BeautifulSoup. Now we explicitly ask for "lxml," following the recommendation on BeautifulSoup's documentation:
> If you can, I recommend you install and use lxml for speed. If you’re using a very old version of Python – earlier than 2.7.3 or 3.2.2 – it’s essential that you install lxml or html5lib. Python’s built-in HTML parser is just not very good in those old versions.
Before:
`soup = BeautifulSoup(content)`
After:
`soup = BeautifulSoup(markup=content, features="lxml")`
The warnings are gone, tests are passing in local.
