Improve /reset and /confirm w.r.t. GENERIC_RESPONSES and additional f…

[jwag956]

…orm args.

Title says it all - very confusing (UX) results when adding a form arg (e.g. captcha) so the above forms and having an error.

closes #814

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (3bbd996) 98.16% compared to head (e925dbd) 98.16%.

❗ Current head e925dbd differs from pull request most recent head c433937. Consider uploading reports for the commit c433937 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #815   +/-   ##
=======================================
  Coverage   98.16%   98.16%           
=======================================
  Files          34       34           
  Lines        4460     4461    +1     
=======================================
+ Hits         4378     4379    +1     
  Misses         82       82           

Impacted Files	Coverage Δ
flask_security/forms.py	99.21% <ø> (ø)
flask_security/views.py	98.78% <100.00%> (+<0.01%)	⬆️

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