Started PressGang 1.7 Release
Added BZ#1016354 - RFE: disable inclusion of preface.
Added new common content node type for BZ#1065609 - RFE: Need a way to specify the location of common content
Merge branch 'master' into devel

Conflicts:
	pom.xml
Merge branch 'master' into devel
Added new entity id list query parameters for searching Content Spec Nodes.
Fixed BZ#1110539 - Unable to push some DocBook 5.0 topics for translation.
Add method to get the id for a DocBookVersion enum.
Fixed the createXInclude() method, so that it doesn't encode "/".
PressGang 1.7 Release