off screen Gestures

[dadaz]

Don't know if it's the good place, but on your port of MIUI 6 for Oneplus, off screen gestures have some issues

Music gestures don't work with another music app (like Deezer for me).
Camera open gesture doesn't work with MIUI camera, it always launch ColorOS camera.

Thanks for your work.

[wuxianlin]

Since we use ColorOS gestures app,it open ColorOS camera or Music by default.Maybe we can modify to fix it.
因为我们使用的ColorOS的手势，所以它默认是打开的ColorOS相机或者音乐，我们可能可以修改一些地方来修复这个问题。