refs #127

refs #127

see: https://tailwindcss.com/docs/preflight#disabling-preflight

The show name is displayed in the quick selector and given the changes
proposed as part of #181, it is no longer needed.

This change implements a show overview page with two display modes:
table and grid. Shows can be ordered and searched. Other filters are not
(yet) implemented.

refs #101
refs #181

The AddShowButton was not rendered when the shows weren’t loaded, but
the only requirement for it to render should be if the user is a
superuser.

refs #127

This component implements the logic for the standard
django-rest-framework (DRF) order parameter.

DRF uses plan field names for ascending and a "-" prefix for descending
order.

Example:
	if you’d want to sort by id you’d write:
		?order=id
	if you’d want to sort by id in reverse order you’d write:
		?order=-id

The OrderFilter supports arbitrary order fields, allows you to set the
sort direction (ascending, descending – configurable per order field)
and supports re-ordering of order fields so that that hierarchical
orders can be set.

This is a helpful ADialog wrapper that manages it’s open state by
itself.

This is sometimes useful when we don’t want to modify the global page
navigation state, but want to use independent lists.