Fix guest import

See merge request !338

Fix space between login boxes on front page

See merge request !337

Change ntnu color palette and header accordingly

See merge request !333

GREG-277: Change description for roles/periods

See merge request !334

GREG-284: Update NIN text

See merge request !336

GREG-283: Fixing issue where default value for mobile country code was set on every rerender

See merge request !335

Add favicon for ntnu and loginpage

See merge request !332

Stop copying node_modules into frontend image

See merge request !331

Add english responsible text

See merge request !330

By not having a .dockerignore file we are including the node_modules
directory in the frontend image, and then installing all the packages a
second time in the build phase when we run npm ci. We now let npm ci do
that work as it's supposed to.

New footer and upper case name ntnu

See merge request !329

Move end role notifications to day after end

See merge request !328

By moving the notifications to midnight on the day they expire we
simplify the work of systems integrating with greg. The frontend has
also been updated to say that end dates are "to (including)" to clarify
that the roles are valid on their last day.

Resolves: GREG-2688

Notify sponsors of bad emails in sent invites

See merge request !326

Add NTNU design for their domain

See merge request !327

Introduces the invalid field on the Identity model. The field is used to
indicate that the Identity is in invalid. This is useful when a value is
not a working value, even though the value passes validation checks,
like unused national id numbers, emails tied to non-existing domains,
etc.

Resolves: GREG-252

If the sponsor writes a valid but non-existent email in a guest invite
we retried sending this email indefinitely. Instead of leaving django q
in an endless loop, we now send an email to the sponsor warning about
the problem instead.

GREG-261: Default country code can be blank in form

See merge request !324

Support arbitrary UIDs in frontend container

See merge request !323

Fix various warnings from tests

See merge request !317

Force clean up of the virtual env before update and use python3.10
everywhere