Update Common/Source/Geoid.cpp

Added interpolation between values of the EGM96 matrix to get the geoid separation
improved drawing of Glide polar in statistics dialog
Target dialog for AAT sector fixed

Before the change a Target dialog for narrow AAT sector (like 90o - 180o) was
centered at the center of the circle used to draw the sector and zoomed
to view 2x its radius. Because of that sector was really hard to manage in
AAT tasks. Now the same sector is centered on the screen and stretched on full
screen.
Added information about landable waypoint on Task Edit screen

It is really important to be aware during task planning that we are
dealing with landable waypoint. If we miss that for example finish for
AAT task is a landable we can have big problems to complete task safe or in
good time.
Merge branch 'DrawPolar' of http://github.com/brunotl/LK8000 into new
Merge branch 'target_aat_sector' of http://github.com/mpusz/LK8000 into new
Merge branch 'landable_wp_in_task' of http://github.com/mpusz/LK8000 into new
Merge branch 'master' of http://github.com/alus-/LK8000 into new
fix readme
Updated Brasilian Port language by G.Vacilotto
Added new language translation in Vietnamese by Dang Quoc Tuan
New human readable tsk file format.
   All task option is saved with task ( rule, time gate, aat target .... )
Parse Task option from cup file
AutoRes: rescale fonts and sizes for generic screen resolutions.
There are no (supposed) impacts to existing custom setups
	modified:   ../Header/Globals.h
	modified:   Buttons.cpp
	modified:   CommandLine.cpp
	modified:   Draw/DrawRunway.cpp
	modified:   Draw/LKDrawWelcome.cpp
	modified:   Draw/LoadSplash.cpp
	modified:   Fonts.cpp
	modified:   Globals.cpp
	modified:   LKFonts.cpp
	modified:   LKInterface/LKInitScreen.cpp
	modified:   lk8000.cpp
Support any PC resolution by startup parameters, passed to command line.
Example:  -x=500 -y=300
An alternate method to obtain -480x272  is -x=480 -y=272
x and y must be in the range of 100 to 3000 pixels.
	modified:   CommandLine.cpp
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.