Add a timeout to the steam buffer indicator

It seems for some streams we never get the 100% so the buffer indicator is
presenting himself forever. No when the status does not change for 5 sec
the indicater will hide itself.
Hide bufferindicator as soon the video is played

And do not use the timeout as in the previous commit.
Merge branch 'master' of git://git.code.sf.net/p/openpli/enigma2