fix some swing thread issues
fix exception in DRBD dialog if there are DRBD source available

java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
Index: 0, Size: 0
java.util.ArrayList.rangeCheck(ArrayList.java:571)
java.util.ArrayList.get(ArrayList.java:349)
lcmc.gui.dialog.host.DrbdAvailSourceFiles$1$1.run(DrbdAvailSourceFiles.java:113)
fix group apply all action

java.lang.NullPointerException
null
lcmc.gui.resources.ServiceInfo.getMetaAttrsRefId(ServiceInfo.java:3128)
lcmc.gui.resources.GroupInfo.applyWhole(GroupInfo.java:146)
lcmc.gui.resources.ServiceInfo.upResource(ServiceInfo.java:4350)
lcmc.gui.resources.ServiceInfo$41.action(ServiceInfo.java:5418)
fix moving up/down group resources from the tree menu
add more debug output