JBIDE-17846 : use proper preferences to enable seam configuration

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-17898 : add usage reporting on project created from examples

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-17868 - Inactive enabled Back button on first page of install dialog from Central