Restricted editing - focus cycling in an editor surrounded by forms

Standard mode

1. Make sure the "Standard" mode is selected.
2. Focus the "Standard" radio button in the "Mode" form.
3. Start cycling the focus using the Tab key.

Expected behaviour:

• The focus should cycle across:
  1. The "Mode" form,
  2. The editor,
  3. The radio form below the editor,
• Pressing Shift+Tab should cycle focus in the opposite direction.

Restricted mode

1. Switch to the "Restricted" mode.

Expected behaviour:

• When selection is in the first restricted exception, pressing Shift+Tab should set focus in the text input with a "value" ("Nick") above the editor
• When selection is in the last restricted exception, pressing Tab should set focus in the radio input with a "label" ("Test 1") below the editor.