Admin runner edit pages should specify tags input format is comma-separated list

After trying it out, it requires "," as separator. It should be a hint/label there.

Also it could use a tag-input style which automatically separates it during input.

Specify the format for input for the tags when editing a runner in the admin dashboard

Make sure these are completed before closing the issue, with a link to the relevant commit.

Edited Sep 06, 2017 by Mark Fletcher