Specify the repository name in .reviewboardrc.
Add an extension for setting severity on comments.

This extension adds the concept of severity levels to comments. There
are three severity levels: Major, Minor, and Info. Every new comment
will have one of these levels.

The comment dialog now has new replacements for the Save button for each
severity level, which both ensures that a level is picked, and makes it
easy to save with a given level. It's far less annoying than most UIs,
which have an additional field that must be picked from.

The severity levels are then shown alongside the comment in the review
dialog, reviews, and e-mails.

This work is sponsored by NetApp.
Remove the rbcia and rbiphone extensions.

These were old extensions that no longer work, aren't very good examples
of extensions, and in general aren't worth having around.
Fix up most of the current shipped extensions.

We had a lot of silly problems with some of the current extensions.
They had less than optimal setup.py files, and were missing __init__.py
files.

rbwebhooks in particular wasn't passing required arguments to the
Extension's parent constructor.

This fixes things up so that all extensions will now load. rbxmlreview
is a bit of a special case. It's missing all the actual reviewing
functionality, and will probably need to be moved until that's there.
Add a Message of the Day extension for Review Board 2.0+.

This extension allows an administrator to display a message to all
visitors to that Review Board server. This can be used to announce
incoming downtime, or a recent upgrade. It can also contain links and
other HTML formatting.

Users can dismiss the message, and it won't show up again for that
particular browser, unless cookies are cleared, or a new message is
posted.
Add documentation for the rb-extension-pack repository.

People were a bit confused about the purpose of rb-extension-pack and it
was unclear which extensions were usable and which weren't. To fix this,
I'm adding a series of READMEs, plus a CONTRIBUTING file for GitHub, to
make it clear what the status and requirements are for each extension.

Going forward, every extension should provide a README in the same
format.
updated README