This commit carves out the overview for incoming webhooks and
moves it to its own file. This is a much better way to structure
these docs.
This is a quick follow-up to Tim Abbott's comment on #9592.
I only renamed references that I thought were absolutely necessary
and only if the resulting sentence structure wasn't awkward.
If the renaming resulted in awkward structure, I replaced the term
"webhook" with "integration" (but only in some very obvious cases).
Fixes#9500.
This commit allows for the /api-new/ page to rendered similarly to our
/help pages. It's based on the old content for /api, but we're not
replacing the old content yet, to give a bit of time to restructure
things reasonably.
Tweaked by eeshangarg and tabbott.
Yago González
Eeshan Garg
Rishi Gupta
Tim Abbott
Brock Whittaker