Add naturaltime for active segments

[robmoorman]

Before:

After naturaltime:

[tomdyson]

While you're there... 'more than 1 times' -> 'more than once' or 'more than 1 time' :)

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@e6fac5f). Click here to learn what that means.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             master   #125   +/-   ##
=======================================
  Coverage          ?    69%           
=======================================
  Files             ?     45           
  Lines             ?   3226           
  Branches          ?      0           
=======================================
  Hits              ?   2226           
  Misses            ?   1000           
  Partials          ?      0

Impacted Files	Coverage Δ
tests/sandbox/settings.py	100% <ø> (ø)

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