Display action menu only when it has contents

aleksis/core/assets/components/person/PersonActions.vue

@@ -28,7 +28,7 @@
             {{ $t("preferences.person.change_preferences") }}
           </v-btn>
 
-          <v-menu>
+          <v-menu v-if="data.person.canImpersonatePerson || data.person.canInvitePerson || data.person.canDeletePerson">
             <template #activator="{ on, attrs }">
               <v-btn outlined text v-bind="attrs" v-on="on">
                 <v-icon center>mdi-dots-horizontal</v-icon>