Remove unused imports.
Eliminate almost all flake8 messages.
Make translations in English identical to source.
Update English PO file.
Add info about pushing translations to Transifex.
Allow setting arbitrary attributes on the toolbar.

Fix #334.
Centralize access to config and default values.
Fix all flake8 warnings and add flake8 to tox.
Document SQL_WARNING_THRESHOLD.

Fix #429.
Add requirements file for development.
Create Sphinx docs.
Initial structure of the docs.
Migrate info from README to docs.
Restructure README a bit.
Improve display of variables in RequestVars panel.

Refs #418.
Django 1.6 still supports Python 2.6.
Fix a few tests that broke after 982f341.
Merge pull request #430 from aaugustin/sphinx-docs

Convert README to Sphinx docs.
<ericholscher> dude. use the new theme. its the hotness.
We'll try to release wheel packages.