Causes UI to hang up

Total hack but it seems to work

This commit introduces the APM Airframe configuration. The interface
is the same as the PX4 one, but the way we deal with the uas is a bit different

Since the APM stack doesn't provide a xml with airframe definitions a
new one was created by hand with only the values that we need, wich will
trigger a download of the parameters file from the mavlink github

Now it correctly handles the FRAME variable and it's faster
regarding the download of the parameters for each type of Frame.

Only show Airframes for ArduCopter, not for ArduRover nor ArduPlane

Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>

- New mission command editor dialog
- New MissionCommands toolbox object to get command info
- Added APM mission item set

- More more on making QGCView real
- Converted Parameter Editor to QGCView