Code review comment for lp:~gmb/launchpad/create-blobjobs-bug-519205

This branch is the next stage of moving the work for processing Apport
BLOBs out of the +filebug view and into the Jobs system.

The changes in this branch mean that when a BLOB is uploaded Launchpad
will automatically create a new ProcessApportBlobJob for it. This job
can then be polled later by +filebug to see if the BLOB has been parsed
properly.

== lib/canonical/launchpad/browser/temporaryblobstorage.py ==

 - I've updated TemporaryBlobStorageAddView so that it now creates a new
   ProcessApportBlobJob for the uploaded BLOB. I've moved the uploading
   functionality into a separate method so that it can be tested
   directly rather than having to test it via the 'Continue' action.

== lib/lp/bugs/configure.zcml ==

 - I've added ZCML for the ApportBlobJob interfaces.

== lib/lp/bugs/interfaces/apportjob.py ==

 - I've added a getByBlobUUID() method to IApportBlobJobSource so that
   we can look up Jobs by BLOB UUID. This will be used in a subsequent
   branch to poll for processing jobs being complete.

== lib/lp/bugs/model/apportjob.py ==

 - I've updated ProcessApportBlobJob.create() so that it will not create
   a new job for BLOB if there's already a job, complete or otherwise,
   in the database.
 - I've added an implementation of getByBlobUUID() to
   ProcessApportBlobJob.

== lib/lp/bugs/tests/test_apportjob.py ==

 - I've added tests for the changes to ProcessApportBlobJob and
   TemporaryBlobStorageAddView.

== lib/lp/bugs/utilities/filebugdataparser.py ==

 - I've cleaned up some lint by adding FileBugData to the __all__ clause
   of the module.

No lint.