Add the ability to do partial updates on the flatten profile object

react/features/base/profile/reducer.js

     STORE_NAME, (state = {}, action) => {
         switch (action.type) {
         case PROFILE_UPDATED:
-            return action.profile;
+            return {
+                ...state,
+                ...action.profile
+            };
         }
 
         return state;

react/features/settings/components/AbstractSettingsView.js

      * @returns {void}
      */
     _updateProfile(updateObject: Object) {
-        this.props.dispatch(updateProfile({
-            ...this.props._profile,
-            ...updateObject
-        }));
+        this.props.dispatch(updateProfile(updateObject));
     }
 }