Now that the new button styles and classes are headed for core (https://gerrit.wikimedia.org/r/#/c/103494/), we should decide on a rollout strategy for using the classes. Basically one of:
1. All at once (do https://gerrit.wikimedia.org/r/#/c/52169) 2. Continue piece by piece (e.g. https://bugzilla.wikimedia.org/show_bug.cgi?id=58296, wpSave, wpPreview, and wpDiff, which Tony Thomas just took).
I'm inclined to #1, for horizontal consistency.
Matt Flaschen