Improve changing reciters multiple times

[umairidris]

The experience going through all reciters to find one you like is not that pleasant (as I had to when setting up the app for my mother). After changing the reciter, it doesn't automatically play the next ayah with the new reciter so you have to go click an ayah manually then go back to the dropdown and change the reciter to the next one. For people that actually look at this setting I am guessing this process is quite common to find a reciter you like.

If the reciters moves to a settings page as described in #580, it would be cool if there was a speaker icon beside the setting which plays a sample audio of the reciter (perhaps plays surah al fatihah). Pressing the icon again would stop it and if the reciter is changed it automatically plays the new reciter.

I can work on this once #580 is fixed.