Upgrade cookieconsent to 2.0.9

[Robert Lyon]

Need to take into account the info here https://silktide.com/really-important-update-to-users-of-cookie-consent-2/ when doing the upgrade

[Robert Lyon (robertl-9)]

The version 2 of this plugin simplifies things greatly

Instead of the user choosing it accept/decline cookies all it does is let the user know that cookies are being used on the site

[Mahara Bot (dev-mahara)]

Patch for "master" branch: https://reviews.mahara.org/6043

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/6043
Committed: https://git.mahara.org/mahara/mahara/commit/10b1d9c6d43a566ac26bcfa67f9f905668b8b5cf
Submitter: Robert Lyon (<email address hidden>)
Branch: master

commit 10b1d9c6d43a566ac26bcfa67f9f905668b8b5cf
Author: Robert Lyon <email address hidden>
Date: Wed Feb 10 15:44:08 2016 +1300

Bug 1535519: Upgrading cookieconsent to version 2.0.9

This version simplifies how we deal with cookie consent
All a user has to do is acknowledge that they understand that the site
uses cookies and if they want to know more they can follow the link to
the cookie policy of the site.

Change-Id: I8a757cb09487167b0bc655d75c3625a0e1d7d0d7
Signed-off-by: Robert Lyon <email address hidden>