Settings upgrade
Refactoring all around so might break stuff
- Move gameSettings to startScreen
- Rename old gameModeForm to practiseForm
- new gameModeForm with buttons for quick, timed, death and lives modes
- playButton moved to its own component
- Minor button styling to make them match and align properly
- death/'äkkikuolema' functionality
- settings.gameMode now defaults to '', clicking pelaamaan (#default) now sets it to 'quick'
- gameSettings hooks simplified
- bodyPart/species forms now prevent choosing 0 options