Added sidebar menu feature

app/javascript/gabsocial/reducers/index.js

@@ -36,6 +36,7 @@ import groups from './groups';
 import group_relationships from './group_relationships';
 import group_lists from './group_lists';
 import group_editor from './group_editor';
+import sidebar from './sidebar';
 
 const reducers = {
   dropdown_menu,
@@ -75,6 +76,7 @@ const reducers = {
   group_relationships,
   group_lists,
   group_editor,
+  sidebar,
 };
 
 export default combineReducers(reducers);

app/javascript/gabsocial/reducers/sidebar.js

@@ -0,0 +1,12 @@
+import { SIDEBAR_OPEN, SIDEBAR_CLOSE } from '../actions/sidebar';
+
+export default function sidebar(state={}, action) {
+  switch(action.type) {
+  case SIDEBAR_OPEN:
+    return { sidebarOpen: true };
+  case SIDEBAR_CLOSE:
+    return { sidebarOpen: false };
+  default:
+    return state;
+  }
+};