Allow the website to display seed ID on file select

[fenhl]

This adds a hidden web_id setting which can be set to a number by a future version of ootrandomizer.com, in which case it will be displayed on the file select screen:

The song title display is moved out of the way to the bottom of the file select screen:

[fenhl]

@TreZc0 @dragonbane0 do you have any way to test this with the website? Or do you think it makes more sense to do that after merging?

[TreZc0]

Yea i will test it asap

[TreZc0]

Can confirm this works just fine.