Add AR2 and some cleanup

Author: Capkirk123

Gamedata/ROEnginesExtended/PartConfigs/AR2_CH4.cfg

@@ -0,0 +1,9 @@
++PART[ROE-XLR99]:BEFORE[RealismOverhaulEngines]:NEEDS[ROEngines]
+{
+	@name = ROEE-AR2
+	@tags = ar-2
+
+	@rescaleFactor *= 0.5042
+
+	@engineType = AR2
+}

Gamedata/ROEnginesExtended/PartConfigs/G1_BDB.cfg

@@ -59,7 +59,7 @@ PART
 	@MODULE[ModuleEngineConfigs]
 	{
 		@configuration = XLR99A
-		!CONFIG:HAS[~name[XLR99-RM-2A]] {}
+		!CONFIG:HAS[#name[XLR99-RM-2]] {}
 	}
 }
 
@@ -71,5 +71,6 @@ PART
 	{
 		@configuration = XLR99
 		!CONFIG:HAS[#name[XLR99-RM-2A]] {}
+		!CONFIG:HAS[#name[XLR99-RM-3]] {}
 	}
 }

Gamedata/ROEnginesExtended/PartConfigs/MB35_SSTU.cfg

@@ -0,0 +1,13 @@
+@PART[ROEE-AR2]:BEFORE[ROWaterfall]:NEEDS[Waterfall]
+{
+    ROWaterfall
+    {
+        template = waterfall-kerolox-sustainer-2-film-cooled    //peroxide, but ran very fuel rich and had very sooty exhaust
+        audio = pump-fed-medium-1
+        position = 0,0,0.0
+        rotation = 0, 0, 0
+        scale = 1.3, 0.45, 1.0
+        glow = _yellow
+        //monopropellant GG, nearly invisible
+    }
+}