feat(web): rework users interface

[dgdavid]

Apart from eliminating the step introduced in #1821 to force users to enter a password for root, this PR significantly revamps the interface of the Authentication page (formerly the Users page) to reduce its complexity and make interactions more intuitive.

Summarizing a lot, the key changes include improving the first user form and moving the root user authentication methods to a new form. This allows users to easily set or clear authentication methods without having to navigate complex actions. I.e., tables and most dynamic actions have been eliminated, making the page much easier to interact with and enabling users to quickly find the options they need.

Authentication page	Root user form

However, there are still areas for improvement:

• Enhance validations and the underlying code that supports them.
• Decouple the input with suggestions from the FirstUserForm (move it to the core namespace).
• Use a simpler widget/input for adding public SSH keys. While the current one works, it is somewhat complex and not well-suited for these form’s use cases.
• Enable the ability to add more than one public SSH key.

Note for reviewers

Warning

After commit c7c424c this PR needs changes done at #2005 (not merged at the time of writing).

Please jump into the branch and use the interface as part of the review process.

If interested in the details, check commits.

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Related to https://trello.com/c/7ewFvR0X (internal link)

[dgdavid]

Would be nice if someone finds a better wording for this.

[ancorgs]

I guess we could re-evaluate the wording of the whole section. But I don't feel inspired today so I suggest to merge as it is (specially since we need to build an image with all the functional changes ASAP) and think about it later.

[dgdavid]

Warning

Please, note that after commit c7c424c this PR needs changes done at #2005 (not merged at the time of writing).

[ancorgs]

First couple of quick notes after an ever quicker manual test:

• In the drawer with the issues it still says "users" instead of "Authentication"
• We should take the opportunity to reword the issue with description "Defining a user, setting the root password or a SSH public key is required". That English is correct but quite hard to parse. I don't have a clear suggestion now but I will ask at IRC.

[dgdavid]

First couple of quick notes after an ever quicker manual test:

• In the drawer with the issues it still says "users" instead of "Authentication"

Fixed at d695b6d

• We should take the opportunity to reword the issue with description "Defining a user, setting the root password or a SSH public key is required". That English is correct but quite hard to parse. I don't have a clear suggestion now but I will ask at IRC.

For completeness, IIRC is something that comes from back end side.

[ancorgs]

LGTM. As mentioned, wording could be better at a couple of places but code-wise and functionality-wise this looks good. So let's merge.

[coveralls]

Pull Request Test Coverage Report for Build 13388202322

Details

• 25 of 51 (49.02%) changed or added relevant lines in 6 files are covered.
• 72 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+47.4%) to 72.34%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
rust/agama-server/src/users/web.rs	0	4	0.0%
service/lib/agama/dbus/users.rb	5	10	50.0%
rust/agama-lib/src/users/client.rs	0	17	0.0%

Files with Coverage Reduction	New Missed Lines	%
rust/agama-lib/src/users/client.rs	9	0.0%
rust/agama-server/src/users/web.rs	63	0.0%

Totals
Change from base Build 13334599182:	47.4%
Covered Lines:	19505
Relevant Lines:	26963

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💛 - Coveralls