[bug 1010006] Fix some test infrastructure issues

[willkg]

What got "fixed":

• this comments out the LiveServerTestCase stuff because it's not
  working right because we rely on data migrations to run to set up the
  test database; once we fix that, we can re-enable LiveServerTestCase
  things
• this fixes some tests in regards to the data context they're running
  in so they're not order dependent
• this adds some helpful comments and removes some not helpful ones

Outstanding:

• selenium needs to be updated
• fix the infrastructure to not require data migrations so that we can
  re-enable LiveServerTestCase

r?

[willkg]

All this diffy stuff is really just "added a cache.clear() to tearDown and removed an obvious comment".

[willkg]

Added some notes so it's easier to follow in your storybook because there's a non-trivial amount of "wtf" here.

This is the first half of fixing that bug. I need this now so things aren't fux0rd. I'll fix the second half (removing the need to do data migrations) at some point when I'm not hurting for time.

To test:

1. run the tests. ./manage.py test
2. run the feedback tests ./manage.py test fjord/feedback/tests/

[willkg]

Oops--that second step should be:

1. run feedback views tests ./manage.py test fjord/feedback/tests/test_views.py

[willkg]

Also, this reduces test run times for fjord:

• master: 1m16s
• this branch: 39s

[willkg]

Also, this decreases the time it takes to boil water on your stove. It realigns the laws of physics to work for you.

[rlr]

wow, crazy pants!!

[rlr]

Everything you commented makes sense. Tests pass. Ran 156 tests in 21.709s

r+

[willkg]

Landed: 53791e9 [bug 1010006] Fix some test infrastructure issues