Prefix default push channel with applicationId

[marvelm]

Overview

• The default push channel is now unique to each application.

My hope is that this change will reduce the chances of accidentally sending pushes to wrong environment.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@a5ce9fc). Click here to learn what that means.
The diff coverage is 100%.

@@            Coverage Diff            @@
##             master    #4182   +/-   ##
=========================================
  Coverage          ?   92.14%           
=========================================
  Files             ?      116           
  Lines             ?     8045           
  Branches          ?        0           
=========================================
  Hits              ?     7413           
  Misses            ?      632           
  Partials          ?        0

Impacted Files	Coverage Δ
src/Push/PushQueue.js	100% <100%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a5ce9fc...c101362. Read the comment docs.