:bug: fixed undefined func for events and exhibitions in sidebars | #115

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

     },
     methods: {
         dateFrom(unix, includeTime) {
-            const f = includeTime ? 'dd-m-yy h:MM' : 'dd-m-yy'
-            return new Date(parseInt(unix) * 1000).format(f)
+            const d = new Date(parseInt(unix) * 1000)
+            return includeTime ? d.toLocaleString('en-US') : d.toLocaleDateString('en-US')
         },
         async getPosts() {
             this.$store.commit('CLEAR_EVENTS')

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

     },
     methods: {
         dateFrom(unix, includeTime) {
-            const f = includeTime ? 'dd-m-yy h:MM' : 'dd-m-yy'
-            return new Date(parseInt(unix) * 1000).format(f)
+            const d = new Date(parseInt(unix) * 1000)
+            return includeTime ? d.toLocaleString('en-US') : d.toLocaleDateString('en-US')
         },
         async getPosts() {
             this.$store.commit('CLEAR_EXHIBITIONS')