Remove Alfresco Enterprise dependency.
Target Alfresco Community 4.2.f
Add test class for PDFActionFormFilter.
Add failing test for beforePersist().

PDFActionFormFilter.beforePersist() throws a NullPointerException if the
INPLACE parameter is null. run the tests with `mvn integration-test`
Fix NPE in PDFActionFormFilter.
Merge branch 'npe-fix'