fix 2 links that were broken during i18n changes.
Remove CONTRIBUTING.md

Github includes a "Please review the guidelines for contributing
to this repository" link when creating a pull request, and it links
to the Markdown version of this file, which is annoying. Removing
the file should redirecto the link to the reStructuredText version
of this file.
Remove comment for how to install PIL

We use Pillow now, which can be installed via PyPI
Release Notes 1-23-14

First Draft
Revised, final release notes for 1-23-14
make SplitMigrator take a User object, rather than a user ID
first pass on a migrate_to_split Django command
Add some dummy arg parsing tests
happy path unit test