Feature: Application menu for all OS + ctrl+shift+N for new window

[timotheeguerin]

fix #1046

[codecov]

Codecov Report

Merging #1047 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1047   +/-   ##
=======================================
  Coverage   54.03%   54.03%           
=======================================
  Files         839      839           
  Lines       19906    19906           
  Branches     2238     2238           
=======================================
  Hits        10756    10756           
  Misses       9150     9150

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