added prev next button to articles

web/themes/custom/materiotheme/vuejs/store/modules/blabla.js

@@ -53,10 +53,21 @@ export default {
         })
     },
     nextPage ({ dispatch, commit, state }, $infiniteLoadingstate) {
-      console.log("Search nextPage", $infiniteLoadingstate);
+      console.log("blabla nextPage", $infiniteLoadingstate);
       commit('incrementPage')
       commit('setInfiniteState', $infiniteLoadingstate)
       dispatch('getItems')
+    },
+    getItemIndex({ dispatch, commit, state}, uuid) {
+      return state.items.findIndex((e) =>{
+        return e.uuid == uuid
+      })
+    },
+    getPrevNextItems({ dispatch, commit, state }, index) {
+      return {
+        prev:state.items[index-1],
+        next:state.items[index+1]
+      }
     }
   }
 }