index.html with relative paths to css and js files

[krandalf75]

Make poly more reverse proxy friendly: Use relative paths to load javascript and css so they are loaded from /poli/static instead /static. So we don't need to publish /static folder.

[codecov-io]

Codecov Report

Merging #58 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #58   +/-   ##
=========================================
  Coverage     65.36%   65.36%           
  Complexity      406      406           
=========================================
  Files            51       51           
  Lines          1611     1611           
  Branches        141      141           
=========================================
  Hits           1053     1053           
  Misses          513      513           
  Partials         45       45

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[shzlw]

Hey man. Thanks for the PR. I tested it and it works well. The only problem is if I refresh the page for example, http://localhost:6688/poli/workspace/report. All resource files are redirected to http://localhost:6688/poli/workspace/static/css/2.07f54ecf.chunk.css from http://localhost:6688/static/css/2.07f54ecf.chunk.css and return 404.