Clean up styles in timeline

[Kristina Hoeppner]

The timeline uses styles from JTLine also in the content area where normal Mahara styles should be used.

Evonne is going to clean that up for consistency.

For example, when you have a journal block that contains and H2 heading, that heading is displayed in the font "Playfair Display" rather than the normal theme font on the timeline. Similarly, anywhere else you can add an H2 to content, it's going to be displayed in the wrong font.

<em> is also a problem, e.g. "The attached file(s) have been added to your commentfiles folder", when you attach a file onto a comment and display the comments as block on the page.

[Mahara Bot (dev-mahara)]

Patch for "master" branch: https://reviews.mahara.org/10389

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/10389
Committed: https://git.mahara.org/mahara/mahara/commit/77af8856f980d79a0c9f889a5e5fd4916b8554c2
Submitter: Robert Lyon (<email address hidden>)
Branch: master

commit 77af8856f980d79a0c9f889a5e5fd4916b8554c2
Author: Evonne <email address hidden>
Date: Wed Oct 2 15:06:04 2019 +1300

Bug 1845129 Clean up styles in timeline

Removed some styles that were redundant and causing issues with
content. Added some styles to make page layout a little clearer.

behatnotneeded

Change-Id: I61d302e1582abe9b6078f6d1bfe04703da4e13bf