Initial tox.ini
Fix sphinx warnings
Specify python versions
Make travis use tox
Merge remote-tracking branch 'upstream/master' into feature/tox

Conflicts:
	.travis.yml
	webapp/graphite/render/functions.py
Add docs to travis builds
Try to leave prefix and remove it on travis
Fix django warnings about deprecated mimetype argument to HttpResponse
Add build status image
Add a docs section about dev/testing
Merge remote-tracking branch 'upstream/master' into feature/tox

Conflicts:
	docs/config-local-settings.rst
Fix docs warning
Manipulate setup.cfg's install section in setup.py
Merge branch 'master' into feature/tox

Conflicts:
	.travis.yml
	docs/index.rst
	docs/install.rst
	webapp/graphite/render/views.py
Add missing mock dep
Fix sphinx warnings
Merge branch 'master' into feature/tox

Conflicts:
	webapp/graphite/metrics/views.py
Merge pull request #577 from brutasse/feature/tox

Use tox for testing

Also adds instructions for local development and some compatability and deprecation fixes.