Newscaster and photo cleanup

Synthetics can no longer magically print color images on a black-and-white photocopier.
No longer possible for organics to acquire a synth-image by un-attaching it from a newscaster.
News articles now come with a timestamp and photo captions, if anything was penned on an attached photo.
Reception-checks no longer unconditionally sleeps the thread. Was causing havoc with NanoUI.

Misc. code refactoring.
Merge pull request #6958 from PsiOmegaDelta/TimeOfNews

Newscaster and photo cleanup