There were a lot of changes in 1.9, so upgrading broke a lot of stuff..
Now 1.10 is out (hey, they're following our number sequencing), it sounds like it's going to get even worse: "Several APIs were deprecated in 1.9.0 and have now been removed."
I'm not sure if we should upgrade to 1.9 as an intermediatary, or just jump straight to 1.10, or something else.
Upgrade to jQuery 1.9.1 and the addition of jQuery Migrate are in https://gerrit.wikimedia.org/r/#/c/47844/
Version: 1.22.0
Severity: enhancement
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=47076