Checkboxes when editing permissions for a page need labels

[Jono M]

For people using screen readers, having a label for every form input is essential as they have no other (easy) way of knowing what the input is for. Currently when editing permissions for a page, the labels next to the checkboxes to select which pages/collections to update don't use the <label> tag.
The essential problem here is that the <label> tag is used for headings on this page, so that style needs to be applied to some heading tag instead so that labels can be used for their semantic purpose.

Affects latest master

[Mahara Bot (dev-mahara)]

Patch for "master" branch: https://reviews.mahara.org/2994

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/2994
Committed: http://gitorious.org/mahara/mahara/commit/e38c0153ea96f7a4120c26b42fa3203c6ae92c18
Submitter: Son Nguyen (<email address hidden>)
Branch: master

commit e38c0153ea96f7a4120c26b42fa3203c6ae92c18
Author: Jono Mingard <email address hidden>
Date: Mon Feb 10 14:42:17 2014 +1300

Use labels in checkboxes pieforms element (Bug #1278216)

Also added styles to keep formatting the same

Change-Id: If96a92c3c9db6465fc7f339148874e4e326a76fb
Signed-off-by: Jono Mingard <email address hidden>