node_manager_fkie: buttons of the discovery widged chagned
master_discovery_fkie: description in der package.xml changed
node_manager_fkie: handling of included files chagned, to avoid errors if a package was not found
node_manager_fkie: selection dialog extended by an description label
multimaster_fkie: added a possibility to deaktivate the multicast heart bearts
node_manager_fkie: handling of 'do not show again' button changed