Some more bugfixes and improvements for the Mission Plan widget. The "current"-checkbox in "Onboard"-waypoints can no longer be changed by clicking directly, but it is handled internally by QGC. Now there should be one and only one checked checkbox, which shows the last KNOWN "current" waypoint on MAV. The white border around an unchecked checkbox means, that the user is requesting the change of current waypoint, but QGC has not received MISSION_CURRENT message as a confirmation yet. Also,if there is no response from UAV after pushing "Read" or "Refresh", the "Onboard" list will be deleted to indicate, that there is no information available.

updated the looks of Onboard Waypoints window, when no UAV is present. Updated mission Save and Load to use version 120

view only" functions and renamed some of the old functions. This version compiles, but has a lot of bugs.

Working WP manager -> map waypoint updates. List reordering does not work yet. Next steps: List reordering, map -> WP manager updates, better waypoint graphs

Fixed a bug where it was possible to "write" a waypoint list without any "current" waypoint. Now the last waypoint is set as "current" in this case.