This allows us to insert HTML underneath the first portal or wrap
the portal in a containing element in future if we want to target
additional CSS to it
Change-Id: Ied28d95407b8d59fc819bb07a2cce3242bd93088
* Following up on the work from
Idf90ee2a0f1c1d08a31cf50099c0bebc7b67e619, this commit renames the
storybook files/storybook names to their respective component name.
e.g. personalNavigation.stories.js => PersonalMenu.stories.js
Bug: T243281
Change-Id: I68054663c5a597f90a826b6f75bf399382dca609