Adding / adjusting the icons in the Content section

[Robert Lyon]

The content section page titles do not have icons but should have as the admin section for same pages do.

Also should add icons to the page titles for portfolio and group sections as well.

[Mahara Bot (dev-mahara)]

Patch for "master" branch: https://reviews.mahara.org/9083

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/9083
Committed: https://git.mahara.org/mahara/mahara/commit/0401ddc9653a3dd6775103660fa871ca4f9e760d
Submitter: Cecilia Vela Gurovic (<email address hidden>)
Branch: master

commit 0401ddc9653a3dd6775103660fa871ca4f9e760d
Author: Robert Lyon <email address hidden>
Date: Wed Aug 22 09:31:17 2018 +1200

Bug 1788296: Adjusting icons in Content section

Change the Plan icon from 'checkbox' to 'map' as signoff plugin makes more
sense to use the 'checkbox' icon in page editor

Also adding icons to the titles of the pages
in content/portfolio/group sections

behatnotneeded

Change-Id: I6b2ab5945dca1e6e26d5b1a9c23d59e39ee057ce
Signed-off-by: Robert Lyon <email address hidden>