fix(rn,labels) top-align with room name field

react/features/base/label/components/styles.js

         flex: 0,
         height: LABEL_SIZE,
         justifyContent: 'center',
-        margin: LABEL_MARGIN,
+        marginHorizontal: LABEL_MARGIN,
         opacity: 0.6,
         width: LABEL_SIZE
     },

react/features/conference/components/native/styles.js

     indicatorContainer: {
         flex: 1,
         flexDirection: 'row',
-        justifyContent: 'flex-end',
-        margin: BoxModel.margin
+        justifyContent: 'flex-end'
     },
 
     /**