README: Add more status badges
Docs: Display release notes before changelog

This will reduce the confusion to users.
Cleanup: removed dead code
Cleanup: Remove unused export code
Some cleanups

* Removed unused imports
* Reduce code length
* Improve readability
Cleanup: Use reverse instead of hardcoded URLs
Cleanups from landscape.io report

Missing imports, unnecessary imports, indents, comments...
Cleanup: Remove references to publishing in SourceForge
Cleanup: Remove broken test-publish-pypi

It doesn't work.
Makefile: Remove unused publish directive
Releasing docs: Major cleanup
Templates: implemented generic about page

Brings back stock Pootle content.

Fixes evernote/pootle#262.
Migration cleanup: Specify dependencies just once
Migrations: Rename migration to just have one migration per number
translationproject: Check for disabled projects in more places