Email notifications - Response made

[jackcarlisle]

ready for review after #54 (needs rebase)

• adds email notifications when a response is made to feedback

#5

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@5a68388). Click here to learn what that means.
The diff coverage is 100%.

@@           Coverage Diff           @@
##             master    #55   +/-   ##
=======================================
  Coverage          ?   100%           
=======================================
  Files             ?     15           
  Lines             ?    159           
  Branches          ?      0           
=======================================
  Hits              ?    159           
  Misses            ?      0           
  Partials          ?      0

Impacted Files	Coverage Δ
web/router.ex	100% <ø> (ø)
test/support/conn_case.ex	100% <ø> (ø)
web/controllers/forum_controller.ex	100% <100%> (ø)
web/controllers/auth.ex	100% <100%> (ø)
web/views/feedback_view.ex	100% <100%> (ø)
web/channels/room_channel.ex	100% <100%> (ø)
web/controllers/session_controller.ex	100% <100%> (ø)
web/models/user.ex	100% <100%> (ø)
lib/email.ex	100% <100%> (ø)
web/models/feedback.ex	100% <100%> (ø)
... and 4 more

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[jackcarlisle]

Closing due to changes in the db that are effecting tests, thus previous branches can't be merged