A few improvements

Hi everyone, the update to v2.2 contains the following:

- new: autosave after each puzzle unlock, you can choose between your manual and the auto save when loading (so they are two separate savegames)

- new: 8 players per room allowed (not sure if it is stable, let me know! Take care of your toes!)

- new: first batch of Portuguese translation (thanks to Marina Herrmann)

- new: 100% leaderboard for speedrunners of room 2 (Barbara's secret), you have to solve every puzzle, the order is not important. You can check the state by pressing F1, when there is no hint left you can leave

- fixed loading with missing savegame

- fixed duplicate resolutions in settings

- fixed shadow opacity, so it won't make it impossible to read things

- fixed the hugeness of the shoe (just a little bit :D)