updated spy and nullmovement

also updated some typos. Nullmovement has less stuff that I forgot
about. Used to use tf2mate's things that didn't serve as the bind name
anymore. spy uses 15.2 interp now instead of 17. 1-3 keys has been
changed to slots 1-3. Unbound ambyfocus. partially removed quickswitch
and it's pretty much useless now.