Removed has-danger from bootstrap4 templates

[smithdc1]

has-danger is not required for bootstrap4. Here's an image showing that the error inputs still work with this change.

[codecov-commenter]

Codecov Report

Merging #1168 (f4d6ab6) into main (a5cef68) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1168   +/-   ##
=======================================
  Coverage   97.20%   97.20%           
=======================================
  Files          23       23           
  Lines        2867     2867           
  Branches      243      243           
=======================================
  Hits         2787     2787           
  Misses         39       39           
  Partials       41       41           

Flag	Coverage Δ
unittests	97.20% <ø> (ø)

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