Removed ORDER and LIMIT

SQLite doesn't support these by default. Need to work around it.
Made access to command builder properties virtual
Overrode Limit and Offset to throw not supported exception
Added try catch around Limit assignment

This way, an attempt is made to use the preferred method, but skips it
if it isn't available.
Added an 'Active' property

This property will be used to mark accounts as inactive instead of
deleting them. That way, history for an account is preserved if it needs
to be inspected.
Fixed Stop() not stopping the server

Also renamed _running to _started to make its purpose more clear.