[bug 1074884] Add the ability to sort questions
[bug 1074883] Better offtopic and escalated nav
[bug 1093714] Refine sort/filter UX
[bug 1081934] Include microdata for Google
Upgrade pep8 to willkg's downstream version.
Raise line limit to 99 chars in linter.
Fix all the new lint errors about lambda.
Questions: Add is_solved and filtering to API.

Conflicts:
	kitsune/questions/api.py