Fix personal widget ordering (again) (#787)

Fixes #766 (second attempt).

Signed-off-by: Yannick Schaus <github@schaus.net>

bundles/org.openhab.ui/web/src/components/item/metadata/item-metadata-widget.vue

@@ -103,7 +103,7 @@ export default {
     },
     orderedPersonalWidgets () {
       return [...this.$store.getters.widgets].sort((a, b) => {
-        return a.name.localeCompare(b.name)
+        return a.uid.localeCompare(b.uid)
       })
     },
     configDescriptions () {