add sources controller.
pulp-dev.py installs and uninstalls packages.
use serializer.
add get single content source.
add unit tests.
Raise errors during init to aid in debugging.
add binding tests.
1150297 - Update versions from 2.4.x to 2.5.0.

https://bugzilla.redhat.com/show_bug.cgi?id=1150297
add rest docs.
Move _manage_setup_pys into pulp.devel.environment.
Allow specifying the location of manage_setup_pys.
Fix failing nodes test.
add test.
Move the utility methods for creating symlinks & clearing directories from the PublishStep to the pulp/plugins/util/misc module
Adds tcp_socket shutdown to pulp-celery SELinux modle
Merge branch 'move-plugin-utils-out-of-publish-plugin' into 2.5-dev
Merge branch '2.5-dev'
Merge pull request #1233 from bmbouter/1149365

1149365 - Adds tcp_socket shutdown to pulp-celery SELinux module
Merge branch '2.5-testing' into 2.5-dev
Merge branch '2.5-dev'