WS-842: CapabilityRequest.current_execution has been removed

...ents/capability-request/capability-request.component.html

...onents/capability-request/capability-request.component.ts

...onents/request-operations/request-operations.component.ts

services/capability/test/test_capability_request_views.py

services/capability/test/test_capability_version_views.py

shared/workspaces/test/test_capability_actions.py

shared/workspaces/test/test_capability_info.py

shared/workspaces/test/test_capability_request.py

shared/workspaces/test/test_capability_service.py

shared/workspaces/workspaces/capability/schema.py