Improve knowledge form

[numahell]

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[codecov]

Codecov Report

Merging #89 (69e04c2) into master (703827d) will decrease coverage by 0.05%.
The diff coverage is n/a.

❗ Current head 69e04c2 differs from pull request most recent head 942d669. Consider uploading reports for the commit 942d669 to get more accurate results

@@            Coverage Diff             @@
##           master      #89      +/-   ##
==========================================
- Coverage   96.28%   96.23%   -0.06%     
==========================================
  Files          99       99              
  Lines        3070     3029      -41     
==========================================
- Hits         2956     2915      -41     
  Misses        114      114              

Impacted Files	Coverage Δ
georiviere/knowledge/admin.py	100.00% <ø> (ø)
georiviere/knowledge/models.py	96.87% <0.00%> (-0.36%)	⬇️
georiviere/river/filters.py	100.00% <0.00%> (ø)
georiviere/knowledge/forms.py	100.00% <0.00%> (ø)
georiviere/description/forms.py	93.33% <0.00%> (ø)
georiviere/maintenance/forms.py	100.00% <0.00%> (ø)

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