Promoted and added curators should go at the end of the list

src/redux/infinite-list.js

@@ -76,10 +76,11 @@ const InfiniteList = key => {
                 ...state,
                 items: state.items.filter((_, i) => i !== action.index)
             };
-        case `${key}_PREPEND`:
+        case `${key}_CREATE`:
             return {
                 ...state,
-                items: [action.item].concat(state.items)
+                items: action.atEnd ? state.items.concat([action.item]) :
+                    [action.item].concat(state.items)
             };
         case `${key}_ERROR`:
             return {
@@ -94,7 +95,7 @@ const InfiniteList = key => {
     };
 
     const actions = {
-        create: item => ({type: `${key}_PREPEND`, item}),
+        create: (item, atEnd = false) => ({type: `${key}_CREATE`, item, atEnd}),
         remove: index => ({type: `${key}_REMOVE`, index}),
         replace: (index, item) => ({type: `${key}_REPLACE`, index, item}),
         error: error => ({type: `${key}_ERROR`, error}),

src/views/studio/lib/studio-member-actions.js

@@ -139,7 +139,7 @@ const promoteCurator = username => ((dispatch, getState) => new Promise((resolve
         const index = curatorList.findIndex(v => v.username === username);
         const curatorItem = curatorList[index];
         if (index !== -1) dispatch(curators.actions.remove(index));
-        dispatch(managers.actions.create(curatorItem));
+        dispatch(managers.actions.create(curatorItem, true));
         return resolve();
     });
 }));
@@ -163,7 +163,7 @@ const acceptInvitation = () => ((dispatch, getState) => new Promise((resolve, re
             if (userError) return reject(userError);
             // Note: this assumes that the user items from the curator endpoint
             // are the same structure as the single user data returned from /users/:username
-            dispatch(curators.actions.create(userBody));
+            dispatch(curators.actions.create(userBody, true));
             dispatch(setRoles({invited: false, curator: true}));
             return resolve();
         });

test/unit/redux/infinite-list.test.js

@@ -93,15 +93,18 @@ describe('Infinite List redux module', () => {
         });
 
         describe('CREATE', () => {
-            let action;
-            beforeEach(() => {
-                action = module.actions.create(7);
-            });
-            test('prepends the given item', () => {
+            test('prepends the given item by default', () => {
+                const action = module.actions.create(7);
                 initialState.items = [8, 9, 10, 11];
                 const newState = module.reducer(initialState, action);
                 expect(newState.items).toEqual([7, 8, 9, 10, 11]);
             });
+            test('appends the given item if given `atEnd` arg', () => {
+                const action = module.actions.create(7, true);
+                initialState.items = [8, 9, 10, 11];
+                const newState = module.reducer(initialState, action);
+                expect(newState.items).toEqual([8, 9, 10, 11, 7]);
+            });
         });
 
         describe('ERROR', () => {