Fixes #2908

[hloeffler]

Adding check setting.Service.RequireSignInView to /explore/users/

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@09bcc9e). Click here to learn what that means.
The diff coverage is 100%.

@@            Coverage Diff            @@
##             master    #8340   +/-   ##
=========================================
  Coverage          ?   41.66%           
=========================================
  Files             ?      496           
  Lines             ?    65524           
  Branches          ?        0           
=========================================
  Hits              ?    27301           
  Misses            ?    34706           
  Partials          ?     3517

Impacted Files	Coverage Δ
routers/routes/routes.go	82.27% <100%> (ø)

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