Pushed missing files

Started adding Replay Editor using johni0702's excellent ReplayStudio Library
Added fully functional GuiDropdown GUI Element (useable in other projects as well)

src/main/java/eu/crushedpixel/replaymod/utils/ResourceHelper.java

@@ -0,0 +1,47 @@
+package eu.crushedpixel.replaymod.utils;
+
+import java.awt.image.BufferedImage;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.imageio.ImageIO;
+
+import eu.crushedpixel.replaymod.reflection.MCPNames;
+import net.minecraft.client.Minecraft;
+import net.minecraft.util.ResourceLocation;
+
+public class ResourceHelper {
+
+	private static BufferedImage defaultThumb;
+
+	static {
+		try {
+			defaultThumb = ImageIO.read(MCPNames.class.getClassLoader().getResourceAsStream("default_thumb.jpg"));
+		} catch(Exception e) {
+			defaultThumb = new BufferedImage(1, 1, BufferedImage.TYPE_3BYTE_BGR);
+			e.printStackTrace();
+		}
+	}
+	private static List<ResourceLocation> openResources = new ArrayList<ResourceLocation>();
+
+	public static void registerResource(ResourceLocation loc) {
+		openResources.add(loc);
+	}
+
+	public static void freeResource(ResourceLocation loc) {
+		Minecraft.getMinecraft().getTextureManager().deleteTexture(loc);
+		openResources.remove(loc);
+	}
+
+	public static void freeAllResources() {
+		for(ResourceLocation loc : openResources) {
+			Minecraft.getMinecraft().getTextureManager().deleteTexture(loc);
+		}
+
+		openResources = new ArrayList<ResourceLocation>();
+	}
+
+	public static BufferedImage getDefaultThumbnail() {
+		return defaultThumb;
+	}
+}