v2.4.0-b4

Apple TV Beta Release 4

Please review #200 for a more detailed list of changes, updates, and known issues

What's new:

App Store launch button is now available
Fixed app layout issue with appletv-gen4 and default remote style selected
Various on-boarding and setup card changes
Increased max app launch buttons on AR2 from 6 to 8
Changed app button lit states in AL1 and AL2 to always be lit when the device being controlled is an Apple TV
Changed visible control buttons in AL2 to make more sense when the device being controlled is an Apple TV
Added app NOSTV ( #204 @horamarques )
Added app TV4 Play ( #202 @Skranta2 )