Add missing ability icons

src/main/java/com/minelittlepony/unicopia/ability/EarthPonyKickAbility.java

@@ -61,7 +61,7 @@ public class EarthPonyKickAbility implements Ability<Pos> {
     @Override
     public Identifier getIcon(Pony player) {
         return getId().withPath(p -> "textures/gui/ability/" + p
-            + "_" + player.getObservedSpecies().getId().getPath()
+            + "_" + (player.getObservedSpecies().isHuman() ? Race.EARTH : player.getObservedSpecies()).getId().getPath()
             + "_" + (getKickDirection(player) > 0 ? "forward" : "backward")
             + ".png");
     }

src/main/java/com/minelittlepony/unicopia/ability/EarthPonyStompAbility.java

@@ -70,8 +70,9 @@ public class EarthPonyStompAbility implements Ability<Hit> {
     @Override
     public Identifier getIcon(Pony player) {
         Identifier id = Abilities.REGISTRY.getId(this);
+        Race race = player.getObservedSpecies();
         return new Identifier(id.getNamespace(), "textures/gui/ability/" + id.getPath()
-            + "_" + player.getObservedSpecies().getId().getPath()
+            + "_" + (race.isHuman() ? Race.EARTH : race).getId().getPath()
             + ".png");
     }
 

src/main/java/com/minelittlepony/unicopia/ability/ToggleFlightAbility.java

@@ -43,9 +43,10 @@ public class ToggleFlightAbility implements Ability<Hit> {
     @Override
     public Identifier getIcon(Pony player) {
         Identifier id = Abilities.REGISTRY.getId(this);
+        Race race = player.getObservedSpecies();
         return new Identifier(id.getNamespace(), "textures/gui/ability/" + id.getPath()
             + (player.getPhysics().isFlying() ? "_land" : "_takeoff")
-            + "_" + player.getObservedSpecies().getId().getPath()
+            + "_" + (race.isHuman() ? Race.EARTH : race).getId().getPath()
             + ".png");
     }