Add pip install of test requirements, remove askbot requirements.

Feature/victor/fix self assessment

Move APT dependencies and repos to their own files

- increments attempts on any transition to DONE state

now keep each set of responses in a separate dictionary

Feature/alex/regions

Feature/alex/crystallography update mitx

Remove unused askbot/discussion sass stylesheets

The unused styles are referencing images that no longer exisit,
breaking collectstatic and therefore tests.

You need to fill out your full name but it's not marked with a *

required.

Feature/jarv/dashboard grades