Remove non-button props from those passed to Button.

[imnasnainaec]

Resolves #662

This is sadly a case-by-case manual fix. I wanted to define a general-purpose function to remove from props anything in a specified interface, but https://stackoverflow.com/a/58280921

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This change is 

[codecov-io]

Codecov Report

Merging #861 (72c92ef) into master (0a8593c) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master     #861   +/-   ##
=======================================
  Coverage   51.63%   51.63%           
=======================================
  Files         242      242           
  Lines        6627     6627           
  Branches      422      422           
=======================================
  Hits         3422     3422           
  Misses       2894     2894           
  Partials      311      311           

Flag	Coverage Δ
backend	56.41% <ø> (ø)
frontend	46.95% <0.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/components/Buttons/ButtonConfirmation.tsx	33.33% <ø> (ø)
src/components/Buttons/DeleteDialog.tsx	100.00% <ø> (ø)
src/components/Buttons/EditTextDialog.tsx	23.52% <ø> (ø)
src/components/Buttons/FileInputButton.tsx	20.00% <0.00%> (ø)
src/components/Buttons/LoadingButton.tsx	100.00% <ø> (ø)
src/components/Buttons/LoadingDoneButton.tsx	100.00% <ø> (ø)
...components/PasswordReset/RequestPage/component.tsx	0.00% <0.00%> (ø)
...c/components/ProjectExport/ExportProjectButton.tsx	75.00% <ø> (ø)
...ectScreen/CreateProject/CreateProjectComponent.tsx	26.47% <ø> (ø)
...ts/ProjectSettings/ProjectImport/ProjectImport.tsx	0.00% <ø> (ø)
... and 3 more

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[johnthagen]

Reviewed 4 of 9 files at r1, 9 of 10 files at r2.
Reviewable status: complete! all files reviewed, all discussions resolved

[johnthagen]

I think using composition in the way makes this code easier to understand. Great job.