distinguish learning and episodic learning, enable fast-learning without drawing every step to reduce lag

- repainting every step on no time delay will certainly freeze the app, so "fast-learning" will disable it, only refreshing current episode label
- Added new abstract class "Episodic Learning". Maybe just use an interface instead?! Important because TD learning is not episodic, needs another way to represent the rewards received (maybe mean of last X rewards or sth)
- Opening two JFrames, one with learning infos and one with environment

src/main/java/core/RNG.java

@@ -13,10 +13,6 @@ public class RNG {
         return rng;
     }
 
-    public static void reseed(){
-        rng.setSeed(seed);
-    }
-
     public static void setSeed(int seed){
         RNG.seed = seed;
         rng.setSeed(seed);