Remove mb-3 from the floating fields

[JobvDijke]

You can otherwise not overwrite this display setting as it uses !important

[abe-101]

@JobvDijke My understanding is that "mb-3" is part of the magical look that crispyforms give your forms
Removing from the defualt is therefore not a good idea

@smithdc1 suggested #74 (comment) we put "mb-3" in the else clause of the wrapper_class
This would give an option to override it
In PR #128 I've implemented like he suggested

[xadium]

I've commented on the PR but this is still open and the PR was closed due to the HEAD branch being deleted.

#128 (comment)