Save card enabled state across launches
Added title to dialogs

Also removed unused card Type
Disable already selected heroes from picker
Added stats fragment
Made the app a bit prettier
Removed alternative blocking from randomizer

Maybe I will re-add this feature later, but it's just confusing for now.
Prettified StatsFragment
Added simple point-targeting randomizer
Added difficulty selector to randomizer
Added method for specifying difficulty
Made stats fragment more informative
Added "about" section