Added getAliasesAsKeyStrings to InputWritr

There's some hardcoding there. Ah well.
Used getAliasAsKeyStrings in UI
Implemented on_add, on_remove in QuadsKeepr

Rather than just having on_update, these are for both adding and
removing things. This will be good for MapsHandler marking PreThings as
placed or not placed.
Added .spawned check to prethings
Prevented accidental option button clicks

The parent .control div for all options has an "active" attribute now to
check for whether it's active active (triggered by
onmouseover/onmouseout)
Slight button size improvements

Also animateFlicker.
Attached more keys to UI

WIll soon make them dropdown menus to change.
Added skeleton for InputWriter alias changing

It's not used yet, but it should work soon. Brb turkey break, gotta
sleep...
Got controls menu to work

InputWriter can switch around alias values, wheee
Removed logs from controls menu