meneth.XXX events in PB_various.txt (+ refs) use pb_various namespace

Plus some quick performance improvements by avoiding the messaging
system with hide_window=yes on a few maintenance events in there.
Base chance of CTA combat pulse event reverted to normal (+25%)
Cleanup event for do_not_disturb flag on rulers w/ it set >= 60 days
Merge pull request #108 from zijistark/alpha

PB_various.txt maintenance, on_actions tweak, and do_not_disturb cleanup