Fix turn end if placing air attack in bouncy world edge map was denied
Fixes
bug #728.
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_focused="true" android:state_enabled="true" android:drawable="@drawable/button_focused" />
<item android:state_focused="true" android:state_enabled="false" android:drawable="@drawable/button_focused_disabled" />
<item android:state_focused="false" android:state_enabled="true" android:drawable="@drawable/button_normal" />
<item android:state_focused="false" android:state_enabled="false" android:drawable="@drawable/button_disabled" />
</selector>