CommonServer: fixed nil client defect
taglines: no more "Use 'sh_affirm' responsibly."
speclisten: added sh_specmods
enforceteamsizes: must be joining gameplay team
communityslots: no allsay for spec full admins
captains: specs don't count against total clients
speclisten: corrected message timing defect
mutes: only notify about marine/alien teammates
communityslots: RR may not talk to full game
communityslots: fixed method typo
Merge remote-tracking branch 'upstream/master'