Remove seconds counter on issue/MR creation

Summary

After opening an issue, the time since opened counter is updated every second, which is slightly annoying.

I would prefer it to just show "just a moment ago" or something like that, flowing into "Opened 1 minute ago".

Steps to reproduce

1. Go to some open source project hostted on gitlab.com
2. Submit a new issue
3. Look near the top of page.

What is the current bug behavior?

In issue status, there is "Opened 1 second ago" that is updated secondly, distracting attention and maybe causing unnecessary background browser activity.

What is the expected correct behavior?

"Time ago" counter granularity is minutes.

Proposal

• Show "just now" from 0 - 59 seconds instead of the ticking counter
• At 1 minute, it should return to 1 minute ago (which we currently have)