thanks. Right, I understand this PR in general, I was asking specifically about the refactoring of the JS on the lines that these comments are attached to; but you answered that with `.on('click') vs .click()... and leverages rails-ujs` I think. 

Hmm, I don't think I actually normally include rails-ujs in my apps. Is this the first thing in BL that has/will require rails-ujs?