Removed book that causes braindeadness

Choosing a certain religion name and/or deity causes player to start out with 100 brain loss.  Removed that.
Merge pull request #4307 from Kani0824/patch-2

Removed book that causes braindeadness
Fixed rad collector toxin drain bug

Removed bad code modifying variables directly and replaced it with a proc that correctly modifies the gas volume.
Merge pull request #4320 from Loganbacca/bayfix-4315

Rad collector fix
Admin requested addition of a global dsay toggle.
fix for muting deadme as well.
Merge pull request #4323 from DJSnapshot/hotfix

Admin requested addition of a global dsay toggle
Disabled background processing
Fixes an error with the explosions-deleting-zone-air detection.
Merge pull request #4330 from SkyMarshal/patch-6

Fixes an error with the explosions-deleting-zone-air detection.
Traitor Panel Bugfix:  Adds the convert verb to RevHeads made using the traitor panel

Also removes it if you use traitor panel to make them a regular employee using the tator panel.
Merge pull request #4334 from Ccomp5950/revhead_tatorpanel

Traitor Panel Bugfix:  Adds the convert verb to RevHeads made using the traitor panel
dirt nerf
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' into develop