JBIDE-18666 : update query url for Red Hat Customer Portal searches

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-18681 - 'Invalid thread access' error in central during shutdown
[JBIDE-18748] Fix compilation error in central test bundle
Bump top level central component version to 4.3.0-SNAPSHOT

Signed-off-by: Fred Bricon <fbricon@gmail.com>
Bump tests version to 4.3.0-SNAPSHOT

Signed-off-by: Fred Bricon <fbricon@gmail.com>
Fix failing tests in Mars

Signed-off-by: Fred Bricon <fbricon@gmail.com>
Bump central version to 2.0.0-SNAPSHOT and examples to 3.0.0-SNAPSHOT

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-18819: Always show Software/Updates tab
JBIDE-18652: More elegant logging instead of NPE