Merge branch 'MDL-67881-master' of git://github.com/bmbrands/moodle

diff --cc lib/templates/drawer.mustache
index 4daa4df,02356d0..020da3b
--- 1/lib/templates/drawer.mustache
--- 2/lib/templates/drawer.mustache
+++ b/lib/templates/drawer.mustache
@@@ -35,10 -35,10 +35,10 @@@
      id="{{$drawerid}}drawer-{{uniqid}}{{/drawerid}}"
      class="{{$drawerclasses}}{{/drawerclasses}} drawer bg-white {{^show}}hidden{{/show}}"
      aria-expanded="{{#show}}true{{/show}}{{^show}}false{{/show}}"
 -    aria-hidden="{{#show}}false{{/show}}{{^show}}true{{/show}}"
 +    {{^show}}aria-hidden="true"{{/show}}
      data-region="right-hand-drawer"
      role="region"
-     tabindex="-1"
+     tabindex="0"
  >
      {{$drawercontent}}{{/drawercontent}}
  </div>