Merge PR #3601 by @Vishwaak - image scaling fix

Author: Cervator

engine/src/main/java/org/terasology/rendering/nui/widgets/UIImage.java

@@ -66,7 +66,13 @@ public void onDraw(Canvas canvas) {
         if (image.get() != null) {
             if (ignoreAspectRatio) {
                 ScaleMode scaleMode = canvas.getCurrentStyle().getTextureScaleMode();
-                canvas.getCurrentStyle().setTextureScaleMode(ScaleMode.STRETCH);
+
+                if (image.get().getWidth() > (image.get().getHeight() * 2)) {
+
+                    canvas.getCurrentStyle().setTextureScaleMode(ScaleMode.SCALE_FIT);
+                } else {
+                    canvas.getCurrentStyle().setTextureScaleMode(ScaleMode.SCALE_FILL);
+                }
                 canvas.drawTexture(image.get(), tint.get());
                 canvas.getCurrentStyle().setTextureScaleMode(scaleMode);
             } else {