Minor Description
in these classes: ActionProposalType, ConverterIDProposalType, ConverterIDProposalType, EnumerationProposalType, FacetNameProposalType, IDProposalType, ResourceBundleNameProposalType, ResourcePathProposalType you initialize
private static Image ICON;
field with new image, but never dispose it.
imo may be a better to put these images in org.jboss.tools.jst.web.kb plugin image registry, so you can avoid image leak after plugin org.jboss.tools.jst.web.kb stop it's work.
