Dynamically list supported Android versions

[osm0sis]

The website is able to update itself when it sees there is an available build in a new version (e.g. Oreo 8.1) so the app should be able to do this also, and this will cut down on the need for app updates (and complaints) in the future.

[marescamichael2]

Hook up my android please.

[Revan335]

That was a great Feature!
#117

[osm0sis]

App is long dead. Closing.