Planet cleanup

core/src/mindustry/content/Planets.java

@@ -1,6 +1,7 @@
 package mindustry.content;
 
 import mindustry.ctype.*;
+import mindustry.maps.planet.*;
 import mindustry.type.*;
 
 public class Planets implements ContentList{
@@ -10,7 +11,8 @@ public class Planets implements ContentList{
     @Override
     public void load(){
         starter = new Planet("//TODO"){{
-
+            detail = 6;
+            generator = new TestPlanetGenerator();
         }};
     }
 }