This is all noop in Py3, and Py2 is broke now in various places.
Dropping Py2 code as it will not be a thing going forward.
Django 2 is the next release, Py2 support will be dropped, as such,
dropping this is forward looking.
* Remove markitup (to be replaced with Ace editor)
* Use DUA decorators
* Removed custom signup bits
* Upgraded dependencies
* Added migrations
* Namespaced template locations
* Removed html5parser/sanitizer (for now) - parsing functionality
should be moved out entirely to a hooks
* Replaced ProposalScoreExpression object with a function that returns
F() expressions
