Started PressGang 1.7 Release
Merge branch 'master' into devel

Conflicts:
	pom.xml
	zanata-sync-service/pom.xml
Improved the logging for the sync service when it's downloading what topics to sync.
Fixed BZ#1110539 - Unable to push some DocBook 5.0 topics for translation.
PressGang 1.7 Release