Break dependency on the admin

[alvra]

• Which version of Django are you using?: 2.2.6
• Which version of django-rosetta are you using?: 0.9.3
• Have you looked trough recent issues and checked this isn't a duplicate?

This isn't really clear to me from the documentation, but it seems Rosetta requires the Django admin to be enabled for a few css files. The pages work ok, but lacks all styling.

Is it possible for Rosetta to provide a (minimal) version of these css files in case the admin is not enabled. Placing Rosetta lower than the admin in the INSTALLED_APPS will not override the admin css if it is enabled, or is there a way to avoid this?

As far as I can tell, only the following files are needed:

• /admin/css/base.css
• /admin/css/forms.css
• /admin/css/changelists.css

[jayvdb]

This would be useful for frameworks which include rosetta as part of a distinct admin-like dashboard, such as https://github.com/scaryclam/django-oscar-rosetta

[bittner]

I'd suggest to generalize this topic and call it "Separate Rosetta cleanly from Django Admin".

Why? – Because currently, Rosetta is not even cleanly integrated with the Admin:

• From the user interface, it's not possible to navigate back to the admin (although it seems to be visually integrated)
• Rosetta's templates don't inherit from Django's admin/base.html, which makes it tedious to customize its look and feel

If there were a clean separation it should be easy to allow for a Django setting to use either an integrated Django admin user experience, or a completely independent, stand-alone app appearance and behavior.

That would then potentially obsolete or replace settings like ROSETTA_SHOW_AT_ADMIN_PANEL.

[balazs-endresz]

Since the latest django admin comes with a dark theme I thought I try extending admin/base.html from rosetta/base.html and it was fairly straightforward to get it working and styled properly:

@mbi Would you accept a PR for that, or rather go in the opposite direction and have this completely decoupled from the django admin?

Btw, if someone doesn't want django admin in INSTALLED_APPS, then I guess they can also copy those three css files to their project's own static files.