Fixed background ponies not loading due to different case

src/main/java/com/minelittlepony/CasedResourceLocation.java

@@ -0,0 +1,23 @@
+package com.minelittlepony;
+
+import net.minecraft.util.ResourceLocation;
+
+public class CasedResourceLocation extends ResourceLocation {
+    protected final String casedPath;
+
+    public CasedResourceLocation(String domain, String path) {
+        super(domain, path);
+
+        casedPath = path;
+    }
+
+    @Override
+    public String getPath() {
+        return casedPath;
+    }
+
+    @Override
+    public String toString() {
+        return namespace + ':' + casedPath;
+    }
+}

src/main/java/com/minelittlepony/PonyManager.java

@@ -198,7 +198,7 @@ public class PonyManager implements IResourceManagerReloadListener, ISkinCacheCl
         }
 
         private ResourceLocation apply(String input) {
-            return new ResourceLocation("minelittlepony", String.format("textures/entity/pony/%s.png", input));
+            return new CasedResourceLocation("minelittlepony", String.format("textures/entity/pony/%s.png", input));
         }
 
         public List<ResourceLocation> getPonies() {