Beta Potions 2.1

Allow players to select their schools of choice after drinking a beta
potion.

Beta potions only work during a frenzy or if the server is in beta mode.

To enable the server in beta mode:
- send o 0 FlipOnBeta
- Must also change the flag pbHiddenSwitch in Parliament class to enable
beta mode fully.
Revert "Beta Potions 2.1"

This reverts commit a7e6138b0149bfe3c73caca0261acd3889daec99.