Fix various WCAG things in frontend

See merge request !178

Bugfix/reload guests on verify

See merge request !180

Add emails to guest fixtures

See merge request !179

Consents

See merge request !173

Aria did not match label when changing langauge, and an id was
duplicated

All A and AA problems have been fixed except a missing label on an input
field.

Greg 101 verify identity

See merge request !170

Instead of forcing a reload of the page, we trigger a new api call in
the background, meaning we don't get a flash when verifying an identity.

Serialization has been moved to serializer classes, sharing them when
sensible and Views have been converted to ViewSets to simplify code.

Separates the queryset and the serialization from each other.

The OU view deserves its own file, and the guest info is actually a
person view and should live with  the other person views.

The profile page of a guest now shows a verification button if the guest
has a passport or national identificaiton number that has not been
verified. Clicking the button shows a dialog, with a confirmation button
which triggers a PATCH request to the backend and reloads the page when
it returns.

Resolves: GREG-101

GREG-109: Changing UiB colour for new footer section

See merge request !177

Greg 126 api expand ou objects

See merge request !175

Trigger reload of sponsor page after cancel

See merge request !155

Greg 98 styling fixes

See merge request !176

Move the height/width settings to the logo component