Add Koji support to the tito builder

Remove duplicate pulp-nightly-fedora19 tag
block build of pulp-server rpm on rhel 5
Convert some AgentManager and some BindManager calls into Celery Tasks.
Converted several consumer related tasks into Celery tasks.
1013097 - permit (.) in node IDs.
Merge pull request #640 from pulp/barnabycourt-koji-releaser

Add Koji support for the tito builder
1009926 - Fix Exception thrown on applicability generation
adding a unit test for applicability regenration for consumers without any unit profiles associated
Merge pull request #645 from pulp/barnabycourt-1009926

1009926 - Fix Exception thrown on applicability generation
update deps/gofer to: 0.77
Automatic commit of package [gofer] minor release [0.77-1].
Merge pull request #644 from pulp/jortel-1013097

1013097 - permit (.) in node IDs.
Automatic commit of package [pulp] release [2.3.0-0.17.beta].
Automatic commit of package [pulp-nodes] release [2.3.0-0.17.beta].
1010292 - serialize _last_modified only when it exists.
Merge pull request #647 from pulp/jortel-1010292

1010292 - serialize _last_modified only when it exists.
999129 - removing loading of tracker files at the time of initializing upload manager and adding it when listing remaining uploads
Merge pull request #648 from pulp/skarmark-999129

999129 - removing loading of tracker files at the time of initializing upload manager and adding it when listing remaining uploads
Merge branch 'master' into rbarlow-distributed_tasks

Conflicts:
	server/pulp/server/managers/consumer/applicability.py
Merge branch 'rbarlow-convert_celery_tasks_2' into rbarlow-distributed_tasks