Added promotions to redux and added selector for setting promotions if not PRO

• Added:
- promotions to redux
- selector for setting promotions if not PRO

• Updated:
- StatusList, SidebarPanelGroup to use promotions from redux

app/javascript/gabsocial/actions/promotions.js

@@ -0,0 +1,34 @@
+import api from '../api'
+import { me } from '../initial_state'
+
+export const PROMOTIONS_FETCH_REQUEST = 'PROMOTIONS_FETCH_REQUEST'
+export const PROMOTIONS_FETCH_SUCCESS = 'PROMOTIONS_FETCH_SUCCESS'
+export const PROMOTIONS_FETCH_FAIL = 'PROMOTIONS_FETCH_FAIL'
+
+export const fetchPromotions = () => {
+  return (dispatch, getState) => {
+    if (!me) return
+
+    dispatch(fetchPromotionsRequest())
+
+    api(getState).get('/api/v1/promotions').then((response) => {
+      dispatch(fetchPromotionsSuccess(response.data))        
+    }).catch((error) => {
+      dispatch(fetchPromotionsFail(error))
+    })
+  }
+}
+
+const fetchPromotionsRequest = () => ({
+  type: PROMOTIONS_FETCH_REQUEST,
+})
+
+const fetchPromotionsSuccess = (items) => ({
+  type: PROMOTIONS_FETCH_SUCCESS,
+  items,
+})
+
+const fetchPromotionsFail = (error, listType) => ({
+  type: PROMOTIONS_FETCH_FAIL,
+  error,
+})