Nova-ify the viewer (bug 2063405)

[calixteman]

No description provided.

[calixteman]

It has been visually validated by the UI/UX team and it's behind the nova pref I added recently.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.15%. Comparing base (b96d745) to head (fd8ed84).

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #21779   +/-   ##
=======================================
  Coverage   90.15%   90.15%           
=======================================
  Files         264      264           
  Lines       67253    67253           
=======================================
+ Hits        60632    60633    +1     
+ Misses       6621     6620    -1     

Flag	Coverage Δ
browsertest	66.33% <ø> (ø)
fonttest	9.00% <ø> (ø)
integrationtest	69.37% <ø> (+<0.01%)	⬆️
unittest	58.25% <ø> (-0.02%)	⬇️
unittestcli	56.80% <ø> (-0.01%)	⬇️

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[timvandermeij]

/botio-linux preview

[moz-tools-bot]

From: Bot.io (Linux m4)

---

Received

Command cmd_preview from @timvandermeij received. Current queue size: 0

Live output at: http://54.241.84.105:8877/35eb913209ae126/output.txt

[moz-tools-bot]

From: Bot.io (Linux m4)

---

Success

Full output at http://54.241.84.105:8877/35eb913209ae126/output.txt

Total script time: 1.40 mins

Published

• Viewer: http://54.241.84.105:8877/35eb913209ae126/web/viewer.html
• Viewer (legacy): http://54.241.84.105:8877/35eb913209ae126/legacy/web/viewer.html

[timvandermeij]

I've compared the new and old (regular) viewers, and spotted no differences as expected. Thanks!