Update "scenario mods" tab of info GUI

[theorangeangle]

The scenario mods tab of our info GUI has not been updated in a while to reflect recent changes.

Notably: Paintbrush and autofill are entirely missing from the tab. Some sample descriptions that I wrote up for wiki documentation:

Paintbrush: The paint brush allows regulars and admins to edit terrain, to an extent. This works when the user places refined hazard concrete on the group with an item selected in the palette. Note that this will not work on water as a way of getting free landfill!

Autofill: Autofill is our newest feature, and fills turrets automatically with ammo when placed if enabled. However, using autofill adds a time delay (15seconds) to when the turret becomes active, balancing out the feature for combat-heavy maps. You can select the amount of ammo to fill, ammo type, and an enable/disable checkbox in the autofill panel.

Also, the score icon should be updated to reflect that we now use the 8hr "there is no spoon" achievement icon instead of the rocket silo. Description of the score might also ahve to be changed to reflect the default statistics, along with the possibility for any dynamic ones.

[linaori]

Should we make this list dynamic based on what features are actually enabled? Because being static it's often not showing the right information (diggy turns some things off for example)

[SimonFlapse]

Should we make this list dynamic based on what features are actually enabled? Because being static it's often not showing the right information (diggy turns some things off for example)

I think we should let each feature register itself with the scenario mods tab, to add it to the list