Actually fixed RA map bomber-john
No more sound attentuation for PlayNotification - fixes #2466
Make ctnks missiles explode a bit sooner (still reaching their target)
Balanced "Bombardment Islands" map (from czech army)
fixes #2465

gpsdot.shp shadow uses index 3
Added "room-convergence" map
Fixed hotkeys for infantry
Fixed hotkeys for ships
Fixed hotkeys for vehicles
Fixed hotkeys for aircraft
made WaterPaletteRotation more configurable

Base is now configurable per terrain
ExcludePalettes is now exposed to yaml
add PlayerPaletteFromCurrentTileset and desert tileset for RA

some things left to do:
ore, walls and silo/hbox need some work
add 2 testmaps for desert tileset
fix the remaining issues with the ra desert terrain

- extract mix file as it is easier to work with SHPs
- light palette rotator now excludes terrain palette
- water palette rotator now excludes player palette
- use wire fence, sand bags and brick wall from cnc
- draw ressources with player palette (workaround)
- delete all test maps
add ice sequences, fixes related crash
add Harisson to AUTHORS
add bridges to DESERT
added DESERT rocks
update VS project file
fix most of the palette issues with RA desert in OpenRA.Editor

TODO: use the palette as defined in YAML;
defaults are wrong for DESERT rocks, trees, walls and ore mine