D-Net

[Connect]: Update trunk to angular 11. Delete branch angular-11

[Trunk | Connect]:
1. invite.component.ts: [Bug fix] Set meta (canonical url, url, title, description) only when "longView == true" (when we are on invite page, not just calling invite component).
2. browse-community.component.ts: Added method "_formatDescription()" which calls method "StringUtils.HTMLToString()" and then it cuts description up to a threshold (max chars)....

[Connect | Trunk]: Add urlPrefix on affiliations, curators and community logo

[Trunk | Connect]
1. /connect-assets/:
a. In /about/ added updated icons (1.svg, 2.svg, 3.svg, 4.svg, cycle.svg) and removed .png.
b. In /banner/ added updated icons (login.svg, togetger.svg) and remove .png.
c. In /home/ added updated icons (1.svg, 2.svg, 3.svg, dashboard.svg) and removed .png....

[Connect|Trunk]

- update properties / use prod.prod propertis for production instance
- remove checks for production ready instances
- simplify sitemap
- remove subscribe for properties
- Add community title for custom filter
- update piwik ids - use the same for beta and production

[Connect|Trunk]

code clean up:

-remove unused imports, code, files (Old search pages for results, etc)
-remove Freeguard from modules
-unsubscribe all subscriptions
-Services: configuration, communities, subscribers, user management: unsubscribe from app component or the component that uses them (clearSubscriptions())...

[Connect | Trunk]: Remove helptexts from connect, Change headings

[Connect|Trunk]

Angular.json:
-in prod/beta configuration add replacements for index.html, robots.txt
-add sitemap.xml file

Clean up index.html
add css files in styles.css

PRoduction:
communities browse: in production show link to beta or prod based on the list of prodReadyCommunities

[Connect | Trunk]: Fix height of my communities cards

[Connect | Trunk]: Change color of fonts.