Multiple slideshows to select from

[Doubi88]

Add the ability to create multiple slideshows to select from. To select the slideshow to use, the following items should be available:

• Select one slideshow directly
• Randomly select one of multiple (Is related to the next point)
• Switch the slideshow at specific intervals or times of day

Further research: How can we add the ability to select different slideshows for home screen and lock screen? Ideas:

• Provide two Live Wallpaper definitions in the manifest (Might be confusing)
• Dynamically create a live wallpaper for each slideshow (Is that possible?)
• Select which slideshow to use on home screen and lock screen separately inside the app (Requires set wallpaper permission)

[Doubi88]

#4 Is still relevant. We still need an image selection screen for each slideshow.