[Connect]: Update trunk to angular 11. Delete branch angular-11
[Connect|Trunk]
Angular.json:-in prod/beta configuration add replacements for index.html, robots.txt-add sitemap.xml file
Clean up index.htmladd css files in styles.css
PRoduction:communities browse: in production show link to beta or prod based on the list of prodReadyCommunities
Impact factors: Remove fontawesome css, remove css from connect-custom (moved in library.css)
Statistics: add check for statistics service response
Apply changes from Elixir branch r58296 add impact factors: add fontawesome (package.json, styles.css, angular.json) add them in community page - most recent results
[Connect|Trunk]Merging branch newlinking into Trunk 55132:56708
Merge into trunk branch angular7 rev 55968
An initial commit for Connect portal