add removing animation in PlayerPage
add removing animation in PlayerPage

Change-Id: I7c3418bf3fe74d15f65d14783f426fb8294b7195
Reviewed-on: http://cr.qtquick.me/180
Tested-by: http://ci.qtquick.me/
Reviewed-by: Takahiro Hashimoto <b59128e2582a625f3a4337ede555b631692b1b94@qtquick.me>
Tested-by: Takahiro Hashimoto <b59128e2582a625f3a4337ede555b631692b1b94@qtquick.me>

qt-users-jp/qumoplayer,qt-users-jp/qumoplayer,qt-users-jp/qumoplayer