Renamed the commonly used Position POJO into AdvancedPosition, as it also hold pitch, yaw and roll

Made GuiDropdown only accept instances of GuiEntryListEntry to avoid unneccessary toString() methods returning the name
Added GuiEntryListValueEntry which holds a Value and a Name to be displayed
Continued work on GuiObjectManager

src/main/java/eu/crushedpixel/replaymod/gui/GuiRenderSettings.java

@@ -3,6 +3,7 @@ package eu.crushedpixel.replaymod.gui;
 import eu.crushedpixel.replaymod.ReplayMod;
 import eu.crushedpixel.replaymod.gui.elements.*;
 import eu.crushedpixel.replaymod.gui.elements.listeners.SelectionListener;
+import eu.crushedpixel.replaymod.holders.GuiEntryListEntry;
 import eu.crushedpixel.replaymod.replay.ReplayHandler;
 import eu.crushedpixel.replaymod.settings.RenderOptions;
 import eu.crushedpixel.replaymod.utils.StringUtils;
@@ -391,7 +392,7 @@ public class GuiRenderSettings extends GuiScreen {
         }
     }
 
-    private enum RendererSettings {
+    private enum RendererSettings implements GuiEntryListEntry {
         DEFAULT("default"),
         STEREOSCOPIC("stereoscopic"),
         CUBIC("cubic"),
@@ -410,6 +411,11 @@ public class GuiRenderSettings extends GuiScreen {
         }
 
         public String getDescription() { return I18n.format(desc); }
+
+        @Override
+        public String getDisplayString() {
+            return toString();
+        }
     }
 
     private void startRendering() {