Replace Internal Database

[milo-trujillo]

The database storing cameras for Where are the Eyes is overly complicated, inefficient, and easily improved upon.

We've been using marshaled arrays of pin objects, saved to disk in a series of zone files, so we at least don't need to load all the cameras every time any lookup occurs. It was always a terrible database, which we only used so we could focus on prototyping other areas the server more quickly.

We can make things much simpler and faster with a SQLite database, probably with a schema like:

Latitude	Longitude	Type	Location	Verifications
3.117...	2.998...	Dome	Outside	<binary_blob>

The type and location fields allows us to satisfy #49, which is part of #3 and #15.

Once we have a SQL table we can do queries like "Get all cameras between these latitudes and longitudes", which makes it easy to isolate nearby cameras, and should make solving #47 trivial.