Various teaching-related LaTeX files, including several independent LaTeX repositories as subtrees

latest commit 0f0b9b19f9 Nigel Stanger authored on 14 Aug
	beamerThemeOtagoPlain	Squashed 'beamerthemes/' changes from 65b44be..374b650	8 months ago
	beamerthemeOtago	Squashed 'beamerthemes/' changes from eb14121..2d36aa0	7 years ago
	beamerthemenzcs	Squashed 'beamerthemes/' content from commit eb14121	7 years ago