Controller support

I finally worked on controller support. I also kept working on menus as part of the update.

-you can play and navigate menus with a controller now. However, I haven't implemented customizable buttons for controllers yet (hence why you can't enter the control settings with a controller). It is a non negligible amount of work to add in, so I think I will not include analog sticks in this. -added an option to set the game's speed. I think this is mostly accessibility, I know for a fact that some levels ask for quick and precise movements, so that might help some people.

Other small changes : -all settings & options can be accessed from main menu now -language immediately changes on screen when it is set. Also fixed a few translation bugs. -on the worldmap, levels with stars you haven't gotten yet will show it with dark blue star symbols (this way you know you still have stuff to collect in that level).

There's always menu stuff to improve... but I think it can finally wait a bit. I will try to implement controller customization, but I also want to work on new biomes/levels for a change.