Pass trigger information on build status. Set up a trigger for the sample building repository. Allow to list the builds started from a trigger. Protect the callback with the proper auth for creating a trigger on a repo.

data/database.py

@@ -230,6 +230,7 @@ class RepositoryBuild(BaseModel):
   phase = CharField(default='waiting')
   started = DateTimeField(default=datetime.now)
   display_name = CharField()
+  trigger = ForeignKeyField(RepositoryBuildTrigger, null=True, index=True)
 
 
 class QueueItem(BaseModel):