Slight design tweaks for pipeline list
From !5156 (merged):
The "About 6 hours ago" feels like it's too long. The mockup dropped "about" and used "hr" for "hours" (we should probably use "hrs" when plural). I don't see minutes in the above screenshots, but it should be shortened to "min" as well. "mins" doesn't work very well though for plural so let's stick with "min" for singular and plural.
The commit icon looks nice, but should be closer to the commit SHA so it doesn't just look like a separator.