add one more missing comment block
minor comment fixes
comment tweaks (typos etc)
fix comment block & typo
remove obsolete require once
comment fixes
another comment fix
spelling fix
comment fix
spelling fixes
contact test cleanup - in particular don't do unused assignments (in some cases this highlights test is
invalid but I have not reviewed for that
spelling fixes
add a couple of comments
minor test tidy-up - esp remove unused vars
Merge pull request #3356 from eileenmcnaughton/tests

test & comment tidy-ups
missing comments in civi dir