setup Google Analytics for cinms

[bbest]

• Added nms-web account per Add an account to an existing account - Analytics Help
• Added "property" for cinms and created web stream per Use Analytics with your site - Sites Help

• choosing Global site tag (gtag.js):

  <!-- Global site tag (gtag.js) - Google Analytics -->
  <script async src="https://www.googletagmanager.com/gtag/js?id=G-JB0WCCY7ZR"></script>
  <script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());
  
  gtag('config', 'G-JB0WCCY7ZR');
  </script>

• get snippet and add as header to all web pages in site yaml, then seperately for modals per r markdown - How to include Google Analytics in an RMarkdown generated GitHub Page? - Stack Overflow
• add Pike to administer this account as well. Admin (lower left), Account User Management, Add permissions to nms-web account:
  • Then users can visit https://analytics.google.com, login and should see nms-web / cinms in home dashboard

[bbest]

• Pages visited

• Device type (have to wait 24-48 hrs)

[superjai]

The fix for #78 should solve this issue.

[bbest]

TODO: + for underlying modals, see noaa-onms/ocnms#45