Add Sources management to HTMX interface

[Simrayz]

Scope and purpose

Fixes #1898.

Add staff-only Sources management (SourceSystem and SourceSystemType) to the HTMX interface, removing the need to use the Django admin panel for this.

Screenshots

Screenshot	Description
	Sources overview
	Create Form: The username field preview is automatically synced with the name
	Edit Form
	Dropdown menu 1: An unused source can be deleted, and a missing token can be generated
	Dropdown menu 2: A used source delete is disabled, and tokens can be regenerated at any time
	Source Types overview. Only unused types can be deleted.
	Create Source Type Form. Can only set name.
	Sources menu item.

Contributor Checklist

• Added a changelog fragment for towncrier
• Added/amended tests for new/changed code
• Linted/formatted the code with ruff and djLint, easiest by using pre-commit
• The first line of the commit message continues the sentence "If applied, this commit will ...", starts with a capital letter, does not end with punctuation and is 50 characters or less long. See our how-to
• If this results in changes in the UI: Added screenshots of the before and after

[github-actions]

Test results

    6 files  1 248 suites   2m 25s ⏱️
  909 tests   908 ✅ 1 💤 0 ❌
5 454 runs  5 448 ✅ 6 💤 0 ❌

Results for commit 51a5024.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.43%. Comparing base (b7a7170) to head (2513c76).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1901      +/-   ##
==========================================
+ Coverage   88.21%   88.43%   +0.22%     
==========================================
  Files         140      143       +3     
  Lines        6848     6954     +106     
==========================================
+ Hits         6041     6150     +109     
+ Misses        807      804       -3     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[johannaengland]

Not sure if you can reproduce this, but when I try to delete a source type the "close" is at a strange position:

This does not happen for sources

[Simrayz]

I did have this problem, but it's fixed for me. Have you rebuilt the css?

[johannaengland]

I have, still the same problem 🤷

[Simrayz]

@johannaengland I thought you were referring to the Sources delete dialog, and didn't realize the Source Type dialog was implemented differently 🥲 Should be fixed now though (see the fixup)!

[hmpf]

Much better location than in plannedmaintenance, yes, though the ultimate location is in argus.htmx.auth.utils, if Django doesn't already have this mixin. No need to move it, though.

[hmpf]

Very good that you are told you can't delete sources with incidents.

Having the token column is excellent, but the token is only accessible when regenerating. There are two token systems, though. What about the knox tokens?

drf tokens needs to be stored in the glue service somehow and I'm not sure ppl will realize they can just select the text in the green popup.

Follow-up:

I think it would be better to not have the popup but to alter the row (add a temporary row just after?) with the message and token, and maybe a copypaste button (that does not break selecting the token manually!) with a "I've seen you, go away"-button. That will also help if multiple tokens are set at a time. Each is shown, next to the source it is for.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[Simrayz]

Very good that you are told you can't delete sources with incidents.

Having the token column is excellent, but the token is only accessible when regenerating. There are two token systems, though. What about the knox tokens?

drf tokens needs to be stored in the glue service somehow and I'm not sure ppl will realize they can just select the text in the green popup.

Follow-up:

I think it would be better to not have the popup but to alter the row (add a temporary row just after?) with the message and token, and maybe a copypaste button (that does not break selecting the token manually!) with a "I've seen you, go away"-button. That will also help if multiple tokens are set at a time. Each is shown, next to the source it is for.

@hmpf Created a follow-up issue #1911