ETJump 3.1.1

- fixed regression in OB detector causing it drawing too high
- fixed being unable to activate multiple 'trigger_multiple' entities simultaneously
- auto rtv improvements
  - auto rtv can no longer be voted off if it's already off
  - successful auto rtv vote now displays if it was turned on or adjusted, and displays the correct time until next vote
  - auto rtv no longer gets blocked if 'vote_allow_rtv 0' is set
  - 2 minute warning no longer prints if time gets adjusted so that there is less than 2 minutes until the next vote
- fixed double footsteps and prediction errors on 'surfaceparm nodamage'
- fixed rtv menu not drawing if client connected after rtv had already been called previously during the map, or an rtv vote was active while connecting
- timeruns which don't reset on team change are now reset if a client goes to spec, only allies <-> axis switches don't interrupt
- fixed (global)accum indices 8 and 9 working unreliably
- fixed potential div by 0 in accum and playanim script functions
- updated 'g_oss' value to reflect correct macOS support - only x86_64 is supported
- using 'setoffset' now requires '/kill' like 'noclip' before a timerun can be started
- fixed potential buffer overflow in client rtv menu when 'g_rtvMapCount' was set to < 9