rhbz1074365 Ensure that GWT listeners are stopped on redeploy
rhbz1074365 Add ClassLoaderLeakPreventor
rhbz1074365 Remove redundant shutdown hook
Switch to LeakListener, which logs via JDK instead of stdout/stderr
Merge pull request #388 from zanata/rhbz1074365

rhbz1074365 Prevent thread leaks on redeploy