added some files from content.open-ra.org, fixes #2182

adds Volkov with some minor changes (no C4, range fixes)
adds soviet forward command center build animation
adds icon for mines (not visible in-game yet)

mods/ra/rules/infantry.yaml

@@ -231,6 +231,39 @@ E7:
 	RenderInfantryProne:
 		IdleAnimations: idle1,idle2
 
+E8:
+	Inherits: ^Infantry
+	Buildable:
+		Queue: Infantry
+		BuildPaletteOrder: 110
+		Prerequisites: stek
+		Owner: soviet
+	Valued:
+		Cost: 1800
+	Tooltip:
+		Name: Volkov
+		Description: Elite commando infantry, armed with \nmodular cannons and grenade launcher.\n  Strong vs Vehicles, Infantry\n  Weak vs Air Units\n
+	Selectable:
+		Voice: VolkovVoice
+		Bounds: 12,17,0,-9
+	Health:
+		HP: 150
+	Armor: heavy
+	Mobile:
+		Speed: 5
+	RevealsShroud:
+		Range: 4
+	Passenger:
+		PipType: Red
+	AttackFrontal:
+		PrimaryWeapon: VolkAT
+		SecondaryWeapon: VolkNapalm
+	TakeCover:
+	-RenderInfantry:
+	RenderInfantryProne:
+		IdleAnimations: idle1	
+	-CrushableInfantry:
+
 MEDI:
 	Inherits: ^Infantry
 	Buildable:

mods/ra/rules/system.yaml

@@ -313,6 +313,7 @@ MINP:
 	InvisibleToEnemy:
 	Tooltip:
 		Name: Anti-Personnel Mine
+		Icon: jmin
 	ProximityCaptor:
 		Types:Mine
 
@@ -329,6 +330,7 @@ MINV:
 	InvisibleToEnemy:
 	Tooltip:
 		Name: Anti-Tank Mine
+		Icon: jmin
 	ProximityCaptor:
 		Types:Mine