사운드 팝업창 조정(해상도에 맞는 크기, 내부 위젯 위치 조정)
Merge branch 'NakOh' into Kong

Conflicts:
	core/src/com/mygdx/screen/MenuScreen.java
	core/src/com/mygdx/screen/OptionScreen.java
Merge remote-tracking branch 'origin/HEAD' into Developer

Conflicts:
	core/src/com/mygdx/screen/MenuScreen.java
	core/src/com/mygdx/screen/OptionScreen.java