Improve auth-server homepage design & update dataseeder

[EngincanV]

Description

Resolves #13109

Checklist

• I fully tested it as developer / designer and created unit / integration tests
• I documented it (or no need to document or I will create a separate documentation issue)

[codecov]

Codecov Report

Merging #17660 (ddf13ab) into dev (1f319fe) will increase coverage by 0.04%.
Report is 70 commits behind head on dev.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##              dev   #17660      +/-   ##
==========================================
+ Coverage   53.48%   53.52%   +0.04%     
==========================================
  Files        3034     3036       +2     
  Lines       94787    94863      +76     
==========================================
+ Hits        50693    50774      +81     
+ Misses      44094    44089       -5     

Files Changed	Coverage Δ
...i/ProjectBuilding/Templates/App/AppTemplateBase.cs	0.00% <0.00%> (ø)

... and 14 files with indirect coverage changes

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more