Diashow modified

First of all I’d like to thank the developers for the time and effort they put in OSMC!
I started with the alpha4 release and today run the update to the final(?) realease.

One thing I am missing when displaying my own pictures. I have not found a way to manually step thru the pictures, nothing to stop the diashow, which has a frequency between 1 and 100 seconds.

My suggestion is: Add 0 seconds to disable the show and let the user step thru the pictures by pressing an arrow-key.

As an aside - if you ran an update to get to the RC release you are not actually running the RC. You must do a fresh install to get to the RC.

You can upgrade from RC to Final and beyond through the builtin upgrade process however.