Merge branch 'master' into development

Author: wellle

AdjustIo/src/com/adeven/adjustio/ActivityHandler.java

@@ -27,6 +27,7 @@
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
 
+import android.app.Activity;
 import android.content.Context;
 import android.content.pm.PackageManager;
 import android.os.Handler;