Expand/contract accordion button has no accessible text

[Jono M]

The new page editor has an "Expand/contract" button at the bottom of the list of groups - when clicked it toggles between having only icons show in the accordion, and showing icons and text. However, this doesn't include any accessible text description, so JAWS (for example) simply reports "clickable".

Either a text description should be added or the element should be hidden from screen readers entirely.

Affects latest master

[Jono M (jonom)]

The button also has the same title attribute as the "External" tab above it - presumably not intended

[Mahara Bot (dev-mahara)]

Patch for "master" branch: https://reviews.mahara.org/5181

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/5181
Committed: https://git.nzoss.org.nz/mahara/mahara/commit/c4a9c52908d7ad8a706a5c854b22c4fe6e714e57
Submitter: Son Nguyen (<email address hidden>)
Branch: master

commit c4a9c52908d7ad8a706a5c854b22c4fe6e714e57
Author: Jono Mingard <email address hidden>
Date: Thu Aug 27 17:35:06 2015 +1200

Improve accessibility of expand/contract button in block editor

(Bug #1482469) Added aria-hidden to recommend to screen readers
that they should hide the link, and accessible text in case they
don't.

behatnotneeded

Change-Id: I22dacc30dc83d11149c34902ad3eaac6cc2c20ed