Prevented unexpected bug link validation errors from marking a spec as invalid
Merge branch 'devel'

Conflicts:
	src/main/java/org/jboss/pressgang/ccms/contentspec/processor/ContentSpecValidator.java
Started 1.4-SNAPSHOT
Fixed invalid scm references.
Updated the parent pom version to 1.6-SNAPSHOT.
Added BZ#1013895 - Add the ability to specify a jDocbook POM version.
Added an initial implementation for BZ#1030099 - Reduce noise with small topics. Cleaned up the parser as well so that it is much closer to being thread safe (the logger is the only issue now).
Updated the implementation for BZ#1030099 - Reduce noise with small topics, to fix an issue when working with Articles.
More work on BZ#1030099 - Reduce noise with small topics.
Reworked how Content Spec containers initial text is stored for BZ#1017465
Fixed a bug that was causing section containers to only have initial text.
Added more unit tests and fixed a few minor bugs.
Added more Unit tests.
Added initial implementation for BZ#1053928 - Add Build/XML Validation support for DocBook 5.
Added BZ#885564 - RFE: Inline reference to Chapter/Section name.
Fixed an issue that was causing validation to fail when a section was used with multiple initial text topics.
Fixed a bug that was allowing topics with <refentry> elements to be used incorrectly in Initial Text containers.
Fixed a bug that was causing valid target relationships to fail validation.
Fixed BZ#1065821 - Reserved entities should not be able to be defined in a content spec.
Tweaked a couple of error messages to make more sense.