This drops fomantic-ui as css toolkit and introduces tailwindcss. With
tailwind there are no predefined components, but it's very easy to
create those. So customizing the look&feel is much simpler, most of
the time no additional css is needed.
This requires a complete rewrite of the markup + styles. Luckily all
logic can be kept as is. The now old ui is not removed, it is still
available by using a request header `Docspell-Ui` with a value of `1`
for the old ui and `2` for the new ui.
Another addition is "dev mode", where docspell serves assets with a
no-cache header, to disable browser caching. This makes developing a
lot easier.
The card is no longer a link itself. The main target is moved to be
the content (the area containing the title and tags). This is in
preparation of upcoming changes: if the whole card is a link, it
cannot contain other links, due to a restriction by html. Later a card
may have more links to provide.
This changes the preview urls to use the concrete attachment ids. This
way browsers have it easier to switch the preview image when the
attachment position is changed.
The list view now supports an item id that will be scrolled to and is
highlighted with a shadow. When going back from detail view this is
now used to scroll to the currently viewed item.
Replace the html table with something that has more vertical space,
but scales better horizontally. On most screens at least 6-8 entries
should be visible at once.
