JBIDE-15385 Support annotation @Priority

Improved resolving constants in inner static classes.
Sometimes JDT cannot find a.B.C but finds a.B$C.
JBIDE-15575 - introduction of foundation.ui
JBIDE-15575 renaming package to .xpl package
JBIDE-15575 - cleanup of tracing to remove code duplication
JBIDE-15348 when hyperlinked file does not exist offer to create one

Updated CheckboxMessageDialog in order to make it more general updated Utils, added test for Utils class
JBIDE-15583 update runtimes to 3.0.0
JBIDE-15584 - sever link between runtime and common
JBIDE-15584 accidentally deleted dep during merge
JBIDE-15586 - allows to extend BaseUIActivator and get all added features that go with it

JBIDE-15586 - allows to extend BaseUIActivator and get all added features that go with it
JBIDE-15587 - Converting downloadRuntime wizard to use wizard fragments
Miscelaneous runtime detection code cleanup, re-org of API
JBIDE-15591 - update stacks version to 1.1.0
JBIDE-15348 when hyperlinked file does not exist offer to create one

Added depricated field INCLUDE_APPS
JBIDE-15501 Wrong menu items in "Refactor" menu when Visual Page Editor opened with .jsp file

Added NaturePropertyTester in order to calculate menu item enablement