Meta topic: https://meta.discourse.org/t/cant-pin-unpin-topic-from-the-title/213444?u=osama.
I know there is an inconsistency between the category of the linked topic (#bug) and the title prefix of this PR, but I really couldn't find anything in the code base that suggested this ever worked before, so I'm categorizing this PR as a feature.
In newer Embers jQuery is removed. There is a `find` but it only returns
one element and not a jQuery selector. This patch migrates our code to a
new helper `queryAll` which allows us to remove the global.
This is where they should be as far as ember is concerned. Note this is
a huge commit and we should be really careful everything continues to
work properly.
