Revert "Forced anonymity hours"

This reverts commit c216130a71887f14e7426725cb77b62bfc28adec.
Forced anonimity/random name hours

Allows a number of hours per day (distributed semi-randomly) to have forced global poster anonimity or random name + tripcode assignment from the posted name
set. Both the frequency of hours and anonnimity/random name ratio are configurable.