JBIDE-17570 CordovaSim: Fixing liveReload for JDK 8 / javaFx web engine
JBIDE-17571 NPE when closing JBDS

Null-entries shouldn't be added into Include Path, so additional checks were added.

Signed-off-by: vrubezhny <vrubezhny@exadel.com>
Merge pull request #54 from ibuziuk/JBIDE-17570

JBIDE-17570 CordovaSim: Fixing liveReload for JDK 8 / javaFx web engine
Merge pull request #56 from vrubezhny/jbide17571

JBIDE-17571 NPE when closing JBDS