[JBIDE-17220]Sometimes 'Experimental Features' of JBoss Tools gets visible in Preferences

add model.ui.capabilities bundle to model requirements
JBIDE-16321 Smart DnD from jQuery Mobile Palette

Extended drop position correction to allow each palette item
to define its own rules.
Updated parent pom to beta3
JBIDE-17272 - Compilation error in org.jboss.tools.common.jdt.debug
JBIDE-17294 As-you-type CDI validation doesnt work

The AYT Validator Start Up initialization is fixed

Signed-off-by: vrubezhny <vrubezhny@exadel.com>