* This allow you to ignore some bootstrap modules you have already included/imported
to your project. Fix error: In a webpage you are already using bootstrap and have
a dropdown, but you have to click twice to make it work, because conversejs added
another handler.

* Add:
   - Allow ignoring bootstrap modules using environment variable: BOOTSTRAP_IGNORE_MODULES="Modal,Dropdown".
     Example: export BOOTSTRAP_IGNORE_MODULES="Modal,Dropdown" ; make dist