Added *.db to .gitignore

This should match the sqlite databases.
Some packaging related cleanups

- Deleted the manifest. The auto-detection is closer to what we want
  already, and there's no reason we need to specify this manually.
- Added scripts (restful, shell, init) to setup.py, so that they'll be
  packaged.
- Added a url to our setup.py (this is required).

We're still not supplying an author/author_email, which is required.
We'll have to make a decision as to what to put there.