show request name where appropriate and set as default workspace name

atst/models/request.py

@@ -213,3 +213,7 @@ class Request(Base):
             or self.is_pending_financial_verification_changes
             or self.is_approved
         ) and self.task_order
+
+    @property
+    def displayname(self):
+        return self.latest_revision.name or self.id