Merge branch 'lookup-relationship' into 'develop'

Account lookup: fetch relationship

See merge request soapbox-pub/soapbox-fe!1518

app/soapbox/actions/__tests__/accounts.test.ts

@@ -264,7 +264,8 @@ describe('fetchAccountByUsername()', () => {
         });
         expect(actions[1].type).toEqual('ACCOUNTS_IMPORT');
         expect(actions[2].type).toEqual('ACCOUNT_LOOKUP_SUCCESS');
-        expect(actions[3].type).toEqual('ACCOUNT_FETCH_SUCCESS');
+        expect(actions[3].type).toEqual('RELATIONSHIPS_FETCH_REQUEST');
+        expect(actions[4].type).toEqual('ACCOUNT_FETCH_SUCCESS');
       });
     });