Added breadcrumb object + breadcrumbs for major pages.

client/src/redux/application/application.reducer.js

@@ -1,7 +1,8 @@
 import ApplicationActionTypes from "./application.types";
 
 const INITIAL_STATE = {
-  loading: false
+  loading: false,
+  breadcrumbs: [],
 };
 
 const applicationReducer = (state = INITIAL_STATE, action) => {
@@ -9,12 +10,17 @@ const applicationReducer = (state = INITIAL_STATE, action) => {
     case ApplicationActionTypes.START_LOADING:
       return {
         ...state,
-        loading: true
+        loading: true,
       };
     case ApplicationActionTypes.END_LOADING:
       return {
         ...state,
-        loading: false
+        loading: false,
+      };
+    case ApplicationActionTypes.SET_BREAD_CRUMBS:
+      return {
+        ...state,
+        breadcrumbs: action.payload,
       };
     default:
       return state;