Added Event-Exhibition Sidebar for Posts

vue-theme/src/components/sidebars/sidebar.vue

         //- single layout Exhibitions sidebar
         .shadow(v-if="type === 'exhibition'")
             events-sidebar
-        //- single layout Events sindebar
+        //- single layout Events sidebar
         .shadow(v-if="type === 'event'")
             exhibitions-sidebar
+        //- single layout Post sidebar
+        .shadow(v-if="type === 'post'")
+            exhibitions-sidebar
+            p 
+            events-sidebar
+
 
 </template>