Issue #ED-420 CSS cleanup and themes cleanup & SASS migration

Issue #SB-31172 fix:Overflow of content in the observation items of observation details page

Issue #SB-0000 Update:sl-questionnaire and sl-reports-library angular update to V11

Issue #SB-0000 Updated:common-consumption to Angular-v11

Issue ED-521 fix: client cloud services updated

* 'release-5.1.0' of https://github.com/Sunbird-Ed/SunbirdEd-portal:
  filter change for search
  Issue #ED-211 fix: Make Select published by facet based

Ed 211

* 'release-5.1.0' of https://github.com/Sunbird-Ed/SunbirdEd-portal:
  Issue #SB-0000 fix: Upgraded SunbirdEd forms library to angular v11

Issue #SB-0000 fix: Upgraded SunbirdEd forms library to Angular v11

Issue ED-521 fix: Update CSP variables changes in environment variables

Issue #SB-0000 fix:upgraded SunbirdEd-forms library

Issue #SB-0000 fix: Upgrade chatbot library to NG 11

#Issue #ED-420 CSS cleanup and themes cleanup & SASS migration

Issue #SB-0000 fix: Added testcases

Issue #ED-421 fix: CSS cleanup and themes cleanup & SASS migration

Issue #SB-0000 fix: Upgrade chatbot and sb-notification library

* 'release-5.1.0' of https://github.com/Sunbird-Ed/SunbirdEd-portal: