JBIDE-15819 JSF XHTML Validator Ignores or Overrides Project-level XML Validation settings

XHTML Syntax Validator context creation fixed (Previously it used to break the context of XML Validator, so it was never
initialized properly).
JBIDE-15925 Can't generate Action in project generated by seam-gen 2.3
JBIDE-16027 Build Error when using DS security module

Fixed method DeltaspikeSecurityExtension.findSecurityBindingAnnotations()
Added to test bean class a method having only security stereotype
annotation. In this case the erroneous fork in method
findSecurityBindingAnnotations() is reached.
JBIDE-16019 Reorganize JST component