Collapse main menu by pressing Esc key

[Kristina Hoeppner]

Mahara 17.04+

User should be able to collapse the main navigation menus (user menu, admin menu, main menu) by pressing the Escape key.

[Mahara Bot (dev-mahara)]

Patch for "master" branch: https://reviews.mahara.org/8523

[Steven (stevens-q)]

Test steps

1. user logged in as valid user (admin) (non admin user)
2. user is on home dashboard page
3. user clicks the hamburger menu to expand
4. confirm user can close the flyout menu by clicking outside the menu ✔
5. confirm user can close the flyout menu by pressing the Esc key on keyboard ✔
6. confirm user can close the flyout menu by selecting an option in the menu ✔
7. browse to another site page
8. confirm user can close the flyout menu by clicking outside the menu ✔
9. confirm user can close the flyout menu by pressing the Esc key on keyboard ✔
10. confirm user can close the flyout menu by selecting an option in the menu ✔
11. Repeat steps for non admin user ✔

Catalyst QA Approved ✔

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/8523
Committed: https://git.mahara.org/mahara/mahara/commit/4e0251a6652bf3769fef97d8025a9226ebda0ff4
Submitter: Robert Lyon (<email address hidden>)
Branch: master

commit 4e0251a6652bf3769fef97d8025a9226ebda0ff4
Author: Jaque <email address hidden>
Date: Thu Feb 15 10:56:53 2018 +1300

Bug #1692757: Collapse main menu by pressing Esc key

Add js to hide navigation menu when focus is moved away
from menu or ESC is pressed

behatnotneeded

Change-Id: Ieefc13be65a8c2e7409e9336be13f0d42caa1ed7