Conflicts:
	src/app/shared/shared.module.ts

Community and Collection Tree fixes

- loadCommunities inside ngZone.runOutsideAngular
- Chevron size small unexpanded and large expanded when logged in fixed

Wait for async code in beforeEach

fixed a number of instances in community-list-service.spec.ts where async code was presumed synchronous

Simplify bitstream drag and drop

Collection dropdown on MyDSpace & support enable/disable in Submission UI

Conflicts:
	src/app/core/core.module.ts

Refactor registry service and associated models

Misc edit community and collection fixes