This fixes my issue with collection check_boxes not showing their
error messages properly.

The solution here is to wrap the form_group with bootstrap_wrapping
which will set the label in the "right" place AND add the error
message in the right place.

Note that I'm having issues running tests in my environment - and am
looking to coordinate with project owner.
Avoid duplicate calls to form_group_wrapping
Merge branch 'pr/103'
Potential fix for issue #102