GUI: Port mapping error messaging
GUI: Port mapping error messaging

vinzenz/prototype,pcahyna/leapp-to-prototype,pcahyna/leapp-to-prototype,GAZDOWN/prototype,mfranczy/prototype,leapp-to/prototype,vinzenz/prototype,leapp-to/prototype,GAZDOWN/prototype,vinzenz/prototype,leapp-to/prototype,mfranczy/prototype,GAZDOWN/prototype,vinzenz/prototype,pcahyna/leapp-to-prototype,GAZDOWN/prototype,GAZDOWN/leapp,GAZDOWN/leapp,mfranczy/prototype,leapp-to/prototype,pcahyna/leapp-to-prototype,mfranczy/prototype