Fixes being able to have alien species hair on humans or other species.
Experimentally readding Delete Book verb.
Allow all mobs to emote. Standardising emote proc.
Fixes admins not spawning as aliens on roundstart.
Uncomments Space Law book content.
Revert "Experimentally readding Delete Book verb."

This reverts commit ec3000ecfb2609cbcc5116169aa640e1d89815b5.
Better gender checks.
Merge pull request #3561 from Erthilo/master

Fixes, emotes, books