Update field.html to enable the use of custom-controls on checkbox inputs when show_form_labels is False

[jplaverdure]

The current code prevents the display of checkboxes (single) as BS4 custom-controls if show_form_labels is False. This modification moves the control of the label display around the label block itself allowing the display of checkboxes as custom-control regardless of the value of show_form_labels.

[jplaverdure]

Hello, I updated the associated test file to support the modification I'm proposing.

[jplaverdure]

Now fully tested on my end prior to updating the PR, all tests pass.
Sorry about that.

[jplaverdure]

Hello, any news on integrating this fix ?
Thanks.

[smithdc1]

Hello, I updated the associated test file to support the modification I'm proposing.

Testing this file I can't see any difference with this PR. Both look like this for me 🤔

[jplaverdure]

OMG !
And here I was thinking this would be a simple fix to get the custom-checkbox to work inside tables.
Turns out a bit more work was required for it to work correctly.
I based my final solution off of:
https://stackoverflow.com/questions/54865038/style-a-bootstrap-4-checkbox-without-label

Works OK for me now, my table inline-formset now display custom-checkboxes and rregular (non tables-based) custom checkboxes also work and display as intended.
Please review

[smithdc1]

Thanks @jplaverdure! This looks good to me. 👍

[jplaverdure]

@smithdc1 Any way we can get this into a release on pypi, please ?
This would simplify my project dependencies' management !