User mentions on profile page are not colored correctly
### Problem To quote @tauriedavis >>> Looks like the @ mentions lost their blue color on the profile page: ![Screen_Shot_2018-07-16_at_10.28.22_PM](https://gitlab.com/gitlab-org/gitlab-ce/uploads/4ebd07ea32b8c21fefae71034e18de02/Screen_Shot_2018-07-16_at_10.28.22_PM.png) >>> cc: @akaemmerle @winh (not sure if this is a gitlab-ce~3630472 :wink:)
issue