Extract the client v1 base RestServlet to a separate class

Remove parse id from hs

Merge rest servlets into the client json resource object

Rename MockedDatastoreTestCase to MockedDatastorePresenceTestCase since it is still presence-specific

shareable

Move client v1 api rest servlets into a "client/v1" directory

Only start the notifier timeout once we've had a chance to check for updates. Otherwise the timeout could fire while we are waiting for the database to return any updates it might have