feat: new system info panel in webui settings

[fmartingr]

• Adds a new /api/v1/system/info API call with some general system settings (only allowed by owner accounts)
• Adds a new panel into the webui settings to display the information
• Updates swagger spec
• Fix: Minus symbol not being correctly swapped in webui settings detail panes
• Fix: Swagger definition incorrect in bookmark endpoint
• Fix: Incorrect return value for Database.DBx

Screenshots

[codecov]

Codecov Report

Attention: Patch coverage is 92.59259% with 4 lines in your changes missing coverage. Please review.

Project coverage is 34.66%. Comparing base (650f192) to head (f855d22).

Files	Patch %	Lines
internal/testutil/http.go	80.00%	3 Missing ⚠️
internal/http/routes/api/v1/api.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #926      +/-   ##
==========================================
+ Coverage   34.08%   34.66%   +0.58%     
==========================================
  Files          60       61       +1     
  Lines        4008     4050      +42     
==========================================
+ Hits         1366     1404      +38     
- Misses       2420     2424       +4     
  Partials      222      222              

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[Monirzadeh]

Awesome work.
you done some part that i like to do and make things easier (special thanks for fake admin)
i left some comment that point to a specific bug.

[Monirzadeh]

Thanks 👍