Fix some typos

Except for the typo in staff client's multiclass_search_help.html,
the rest are in comments.

Signed-off-by: Pasi Kallinen <pasi.kallinen@pttk.fi>

Conflicts:

	Open-ILS/examples/apache/startup.pl

Signed-off-by: Galen Charlton <gmc@esilibrary.com>