New human readable tsk file format.
   All task option is saved with task ( rule, time gate, aat target .... )
Parse Task option from cup file
Check max task turnpoint in cup task loading
fix : memory leak on load task error
Numeric keyboard as alternate to scroll list

System Config
- Waypoint Edit
- Truewind IAS
- Safety Altitude
- Terrain Height
- Safety Mc
- Efficiency
- Menu Timeout
- Waypoints
- All the Task Radius (Start Radius/Sector Radius/Finish Radius)
- Max Altitude 1, 2, 3
- Task Start time
- Gates Interval

Basic Settings
- QNH
- Altitude

Wind Settings
- Speed
- Direction
Add Help Button to Numeric Keypad
Fix XML typo.
Add Units in Numeric Keypad
Fix 4.0a CAI302 bug in wind indication, 180 degrees wrong.
	modified:   ../Devices/devCAI302.cpp
Merge branch 'NumKeypad' of http://github.com/brunotl/LK8000 into bruno
Merge branch 'XmlTaskFile' of http://github.com/brunotl/LK8000 into bruno
Merge branch 'CupTask-V2' of http://github.com/brunotl/LK8000 into bruno