Updated the Tag and Topic builders and filters to include the new PropertyTag exists fields and I also cleaned up the builders and filters for "multiple field" fields.
Added the File filter and builder.
Merge branch 'master' into devel

Conflicts:
	pressgang-ccms-query.iml
	src/main/java/org/jboss/pressgang/ccms/filter/TagFieldFilter.java
	src/main/java/org/jboss/pressgang/ccms/filter/TopicFieldFilter.java
	src/main/java/org/jboss/pressgang/ccms/filter/base/BaseTopicFilterQueryBuilder.java
	src/main/java/org/jboss/pressgang/ccms/filter/builder/TagFilterQueryBuilder.java
Fixes from merging and clean up.
Fixed a couple of minor bugs in getting the base names of some fields.
Fixed an issue with the new Property Fields
Merge branch 'master' into devel

Conflicts:
	src/main/java/org/jboss/pressgang/ccms/filter/TopicFieldFilter.java
Fixed up the ContentSpecFilterBuilder to go with the changes merged from master.