Add icons for branch and tag in pipeline list
From #17760 (closed):
Talked with @annabeldunstone about this, but recording here for others. One option for handling tags is to include a tag icon to the left of the ref name if it's a tag, and include a branch icon if it's a branch. Then maybe we can drop the [tag] badge.
I'm guessing that's because fontawesome only has one symbol, and they call it
code-fork. I'd love to see us create custom icons more in line with GitHub and Bitbucket.