common: fixed empty filepath in fileselector, fixed client is_connected, client proper poll methods added, TODO list updated
fixed osc dmx scripts
oscdmx prints registered channels, debug reasons, dmx value of a channel is stored after executing script or changing property
blender ui osc server now has default port 9901 (hardcoded at the moment)
Timeline Marker Trigger: Fixed Errors on deleted Markers (autom. cleanup and tests), Revoke Trigger from TimelineMarker Operator added,  TriggerVisibility added,