removing Eclipse files
adding gradle structure generated by gdx-setup.jar
moving 'cubicforest' to the new folder
build.gradle: adding 'libs' folder for Universal Tween Engine. .jar should be copied there
build.gradle: adding Gson
moving 'assets' to 'android'
new libgdx version: no GL10
removing old libgdx structure: cubicforest, cubicforest-android, cubicforest-desktop