consolidate docs into single html

[soumak77]

Currently there are 4 html files in the docs:

• index.html - displays D3 v3 examples from unpkg
• index-d3v4.html - displays D3 v4 examples from unpkg
• index-test.html - displays D3 v3 examples from locally built files
• index-d3v4-test.html - displays D3 v4 examples from locally built files

The javascript files referenced by each html is the only difference between them. Instead of have 4 different files, create one single file and programmatically add the javascript references based on the query parameters. Create 2 query parameters:

• test
  • if parameter set, use local file
    • ./dist/index.js
  • if parameter unset, use unpkg file
    • https://unpkg.com/personality-sunburst-chart/lib/charts/index.js
• d3
  • possible values v3 (default) or v4
  • use value of parameter to load D3 files and set the D3 version for the sunburst chart options

If the user changes the D3 version, the page should be reloaded with the correct parameters so that the files are loaded properly. There is no need to allow the user to change from testing to non-testing. The npm start script should also be updated to add the query parameter test instead of loading index-test.html

[soumak77]

@germanattanasio I also added two extra profiles for testing (the ones with _2 appended to the names). If you click the Version 2 or Version 3 button for personality insights multiple times, it will randomly pick one of the 2 profiles to display.

This functionality can be changed to programmatically randomizing the profile each time the version buttons are clicked or add a separate randomize button. This way you can remove the 2 extra files.