Fixes 2814, 2815

[simondate]

Fixes -

• #2814
• #2815

Two issues with CKEditor.

[simondate]

Just updated this PR as it was still stripping the aria-hidden="true" attribute.

Note for testers - You'll need to update the conf/config.json file, to include this -

 "ckEditorHtmlSupport": {
    "allow": [
      {
        "name": "^(blockquote|ul|ol|span)$",
        "attributes": true,
        "classes": true,
        "styles": true
      },
      {
        "name": ".*",
        "classes": true,
        "styles": true
      },
      {
        "name": "^a$",
        "attributes": {
          "target": true
        }
      }
    ],
    "allowEmpty": [
      "span", 
      "i"
    ]
  },

[simondate]

Just discovered that the any links to Glossary objects also weren't working.

The latest commit fixes this too.

[mrblonde77]

Any update on this topic? We switched to the current Authoring Tool and Framework Version, and now we have problems with tables in the ckeditor. I assume that it is related to this problem: CKEditor toolbar element 'RemoveFormat' not loaded" #2815