hotkey usability

resolve hotkey conflicts, fixes #2883
add/display existing in-game button hotkeys, fixes #2932

mods/ra/rules/infantry.yaml

@@ -61,7 +61,7 @@ E2:
 		BuildPaletteOrder: 10
 		Owner: soviet
 		Prerequisites: barr
-		Hotkey: g
+		Hotkey: n
 	Valued:
 		Cost: 160
 	Tooltip:

mods/ra/rules/ships.yaml

@@ -6,7 +6,7 @@ SS:
 		Prerequisites: spen
 		BuiltAt: spen
 		Owner: soviet
-		Hotkey: b
+		Hotkey: u
 	Valued:
 		Cost: 950
 	Tooltip:
@@ -238,7 +238,7 @@ PT:
 		Prerequisites: syrd
 		BuiltAt: syrd
 		Owner: allies
-		Hotkey: g
+		Hotkey: b
 	Valued:
 		Cost: 500
 	Tooltip:

mods/ra/rules/structures.yaml

@@ -12,6 +12,7 @@ MSLO:
 		Prerequisites: techcenter
 		Owner: soviet,allies
 		BuildLimit: 1
+		Hotkey: m
 	Building:
 		Power: -100
 		Footprint: xx
@@ -52,6 +53,7 @@ GAP:
 		BuildPaletteOrder: 100
 		Prerequisites: atek
 		Owner: allies
+		Hotkey: x
 	Building:
 		Power: -60
 		Footprint: _ x
@@ -305,7 +307,7 @@ AGUN:
 		BuildPaletteOrder: 50
 		Prerequisites: dome
 		Owner: allies
-		Hotkey: g
+		Hotkey: y
 	Valued:
 		Cost: 800
 	Tooltip:
@@ -1061,7 +1063,7 @@ AFLD:
 		BuildPaletteOrder: 50
 		Prerequisites: dome
 		Owner: soviet
-		Hotkey: g
+		Hotkey: i
 	Valued:
 		Cost: 500
 	Tooltip:
@@ -1286,7 +1288,7 @@ FIX:
 		BuildPaletteOrder: 30
 		Prerequisites: weap
 		Owner: allies,soviet
-		Hotkey: d
+		Hotkey: x
 	Valued:
 		Cost: 1200
 	Tooltip:

mods/ra/rules/vehicles.yaml

@@ -36,7 +36,7 @@ V2RL:
 		Queue: Vehicle
 		BuildPaletteOrder: 40
 		Owner: allies
-		Hotkey: g
+		Hotkey: l
 	Valued:
 		Cost: 700
 	Tooltip:
@@ -74,7 +74,7 @@ V2RL:
 		BuildPaletteOrder: 60
 		Prerequisites: fix
 		Owner: allies
-		Hotkey: f
+		Hotkey: x
 	Valued:
 		Cost: 850
 	Tooltip:
@@ -487,7 +487,7 @@ MGG:
 		BuildPaletteOrder: 150
 		Prerequisites: atek
 		Owner: allies
-		Hotkey: s
+		Hotkey: y
 	Valued:
 		Cost: 1500
 	Tooltip:
@@ -617,7 +617,7 @@ TTNK:
 		BuildPaletteOrder: 130
 		Prerequisites: stek,tsla
 		Owner: soviet
-		Hotkey: l
+		Hotkey: t
 	Valued:
 		Cost: 1350
 	Tooltip: