Fixes #7366.

Kills unecessary photo datum which wasn't even used correctly anymore.
Photos have a global id for ease of synth syncing.
Changes how law/photo syncing is handled when pulsing the appropriate borg wire.
Also ensures re-synced borgs are added/removed from the appropriate AIs.
Merge pull request #7379 from PsiOmegaDelta/Stalkerism

Fixes #7366.