Clean up some recent activation key changes

Removing get/set release version apis because we can
use get/update for the entire key.

Cleaned up consumer registration with activation keys.
We shouldn't allow empty string to go through if we don't allow
"," which also tries to look up an empty string.
remove job blocking
Merge pull request #551 from candlepin/ckozak/cleanup_actkeys

Clean up some recent activation key changes
Merge pull request #553 from candlepin/ckozak/undo_blocking

remove job blocking

Job blocking can become problematic if there are database connection issues which can lead to "stuck" jobs. Removing this should alleviate stuck jobs.
Revert "Remove qpid/amqp code"

This reverts commit 37db29973c8c9931a665fc9fd88324ed106bbe6a.

Conflicts:
	buildfile
	src/main/java/org/candlepin/config/ConfigProperties.java
	src/main/java/org/candlepin/guice/CandlepinContextListener.java
	src/main/java/org/candlepin/guice/CandlepinModule.java

Updated to work with the new jackson. There is an outstanding FIXME
with the AMQPBusEventAdapter.java which needs the upstream ca cert.
Before we only had the one, we how have a directory. Need to decide
if this is still needed or if we need to send the entire list.
update license, cleanup imports
switch to qpid-common 0.22
update port number