First cut of a Aerogear-Unified-Push-Server alert plugin.
Some cleanup and externalization of settings.
Merge pull request #25 from pilhuhn/alert-ups

Aerogear UPS alert sender plugin
[BZ 1020807] - UI shows successful message even though an update of configuration failed - Changing the message from "Configuration updated..." to "Updating configuration...", because we cannot predict if the configuration update will or will not be successful.
add systemInfoManager to lookupUtil
Fix a bad typo on the maven module name.
[BZ 1084626] Make sure metrics thread pool has more than 1 thread to avoid deadlock
[BZ 1084626] adding constraint to ensure there are at least 2 aggregation worker threads