This change replaces date-fns with dayjs throughout the codebase for
more consistent date/time handling and to reduce bundle size. It also
tries to make the formatting and usage consistent.
**Why dayjs over date-fns?**
Just because we were using dayjs more broadly. Its formatting
capabilities, were also easier to extend.
Closescoder/internal#168
Gets rid of the "global state" authentication, and adds a `login` helper
which should be called at the beginning of each test. This means that
not every test needs to authenticated as admin, and we can even have
tests that encompass multiple permission levels.
We also now create more than just the single admin user during setup, so
that we can have a set of users to pick from as appropriate.
* wip: commit progress on code split-up
* wip: commit more progress
* wip: finish initial version of class implementation
* chore: update all import paths to go through client instance
* fix: remove temp comments
* refactor: smoooooooosh the API
* refactor: update import setup for tests
Bruno Quaresma