JBIDE-16822 - Dark text on dark background in Central
JBIDE-16909 : Update project example descriptors for JBT 4.2

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-16856 - UI Freeze at startup (wakes up later)
JBIDE-16943 - Removing unnecesary code
A few fixes suggested by Findbugs
JBIDE-16592: Add a "Remove" operation on Central
JBIDE-16592: Allow update of connectors
JBIDE-16592: Fix selection issues
JBIDE-16375: Refactor Software page to allow multiple sources
JBIDE-16375: Refactor software page to allow multiple filters