Merge pull request #279 from steventlamb/ops

Ops
Add HTML linter to debug_toolbar
Add indexes to popular join/sort fields
Speed up vendors page by not walking relations
Import models directly in views
Suggest logged in users review unreviewed vendors

fixes #252 on github.
whitespace
WIP QUICKFIXUP.

this should be rolled in to another commit, pushing to see if it fixes
the travis build.
FIXUP. add dev_urls.py to gitignore
fixup.