Lit review and citation manager.

citer is currently at a low level of polish

• Document how to get started with the application
• Separate settings from the server logic
• Automate first run setup (populating the database)

The citer data model is based around collections (the Review model) of Documents, and Citation relationships between documents.

                   _____________
                  /             \
                  V             |
 Review -> Document -> Citation-|
                    |
                    V
                    Tags

Frequency diagrams are fun, and this seems to work reasonably well.