[Activities] Harmonize how activities impact the global score

[FrancyCavallari]

Completing a level in Unblock gives you 100 points Completing a 2048 game gives 20 points Writing a Diary page, I'm not sure if it gives anything

[StefanoCecere]

here is a table of current points rewards https://vgwb.github.io/IEEDO/gamedesign/ieedo_gamedesign.html