Re-added accidentally removed Play Store tagline for mobile devices (the "Short description").
Added word 'player' in first sentence; most apps call themselves podcasting player. Hopefully improves Google Play Store listing a bit.
- added three categories; rearrange to reflect popularity of functions within each category
- added Adapt to your environment using our light and dark theme
- added 'remembered playback position' under 'Enjoy listening your way'
- functionality- rather than technology-centred feature list
- more story-like description (from adding, via managing, to listening and thanking the creators)
Closes#1276
Koen Glotzbach
Tom Hennen
daniel oeh