instead of always starting the xmpp receiver for java apps, parsing the appengine-web.xml file and seeing if we should start it based on the settings there
matching over multiple lines, since xml tends to have newlines throughout the area we're matching
Merge pull request #387 from shatterednirvana/only-start-xmpp-java-receiver-as-needed

Instead of always starting the xmpp receiver for java apps
Merge pull request #379 from AppScale/cross-group-transactions

Cross group transaction support
code review fixes
Merge branch 'testing' of github.com:AppScale/appscale into trans-tq