Add dots to system note timestamps and discussion headers (#25655) · Issues · GitLab.org / GitLab · GitLab

Add dots to system note timestamps and discussion headers

cc gitlab-ce!23622 @winh ![Screen_Shot_2018-12-07_at_11.16.23_AM](/uploads/21fe3e8d4f0b05dd13da265ea94a9345/Screen_Shot_2018-12-07_at_11.16.23_AM.png) ![Screen_Shot_2018-12-07_at_11.16.58_AM](/uploads/50fdea79d52a02a9a717686bcc0f87fa/Screen_Shot_2018-12-07_at_11.16.58_AM.png)

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