Enhancement: display current ASN in statistics

[darmiel]

Proposed change

This pull request adds the current ASN to the dashboard.:

If no ASN has been assigned yet, the number is hidden.

Closes #430

Type of change

• Bug fix: non-breaking change which fixes an issue.
• New feature / Enhancement: non-breaking change which adds functionality.
• Breaking change: fix or feature that would cause existing functionality to not work as expected.
• Documentation only.
• Other. Please explain:

Checklist:

• I have read & agree with the contributing guidelines.
• If applicable, I have included testing coverage for new code in this PR, for backend and / or front-end changes.
• If applicable, I have tested my code for new features & regressions on both mobile & desktop devices, using the latest version of major browsers.
• If applicable, I have checked that all tests pass, see documentation.
• I have run all pre-commit hooks, see documentation.
• I have made corresponding changes to the documentation as needed.
• I have checked my modifications for any breaking changes.

[paperless-ngx-secretary]

Hello @darmiel,

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.19%. Comparing base (6fa3522) to head (3979629).

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #6692   +/-   ##
=======================================
  Coverage   97.19%   97.19%           
=======================================
  Files         436      436           
  Lines       17968    17969    +1     
  Branches     1522     1519    -3     
=======================================
+ Hits        17464    17465    +1     
- Misses        501      504    +3     
+ Partials        3        0    -3     

Flag	Coverage Δ
backend	95.88% <100.00%> (+<0.01%)	⬆️
frontend	98.63% <ø> (ø)

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[shamoon]

Thank you for the PR. Im good with the change in general, but I think it'd be cleaner to just add the asn output to the statistics response, rather than making a separate http call. Its obviously not going a significant performance difference, but still makes more sense i think.

Also this will need an update to the translation strings

[shamoon]

Thanks, think it just needs a re-base on dev