The issue is in the Like Posts add-in, which presumably was written that way so it would not cause people dependency issues who didn't know how to solve them (or who couldn't run jquery on their host). Yes, we can modify the add-in, and I'll start working on it as soon as I have a moment, but the bigger issue is that we're going to have to make these changes for every new release of the add-in, which will be a pain..