[log] implement CustomActionComponents to correctly add filters to the toolbar

Otherwise components are aligned incorrectly with real actions on the
toolbar.
RootIndex: return no dirs for packages starting with a dot
DirectoryIndexTest reflecting current state of excluded lib dirs under module content
simplify
JSPX supports jvm debugging, but not in XHTML files
CR-IC-2999 simplify API chooseFile — use native Mac OS X file chooser
java 8: forbid super in static methods
IDEA-115838 FQN inserted for annotated code instead of using imports