Merge branches 'master' and 'menu' of https://github.com/BenjaVR/Jungle-Wars into menu

# Conflicts:
#	core/src/be/howest/junglewars/screens/GameScreen.java

Author: wardpauwels

core/src/be/howest/junglewars/gameobjects/power/impl/AttackSpeedPower.java

@@ -1,7 +1,6 @@
 package be.howest.junglewars.gameobjects.power.impl;
 
-import be.howest.junglewars.gameobjects.power.IPowerType;
-import be.howest.junglewars.gameobjects.power.Power;
+import be.howest.junglewars.gameobjects.power.*;
 
 public class AttackSpeedPower implements IPowerType {
 

core/src/be/howest/junglewars/gameobjects/power/impl/DamagePower.java

@@ -1,7 +1,6 @@
 package be.howest.junglewars.gameobjects.power.impl;
 
-import be.howest.junglewars.gameobjects.power.IPowerType;
-import be.howest.junglewars.gameobjects.power.Power;
+import be.howest.junglewars.gameobjects.power.*;
 
 public class DamagePower implements IPowerType {
 

core/src/be/howest/junglewars/gameobjects/power/impl/MovementSpeedPower.java

@@ -1,7 +1,6 @@
 package be.howest.junglewars.gameobjects.power.impl;
 
-import be.howest.junglewars.gameobjects.power.IPowerType;
-import be.howest.junglewars.gameobjects.power.Power;
+import be.howest.junglewars.gameobjects.power.*;
 
 public class MovementSpeedPower implements IPowerType {
 

core/src/be/howest/junglewars/screens/MainMenuScreen.java

@@ -54,7 +54,7 @@ private void create() {
 
         music = Gdx.audio.newMusic(Gdx.files.internal(Assets.MENU_SONG));
         music.setLooping(true);
-        music.setVolume(0);
+        music.setVolume(0.3f);
         music.play();
 
         // create full screen background