Got basic dialog working, no morph animation yet

app/imports/ui/dialogStack/dialogStackWindowEvents.js

@@ -0,0 +1,11 @@
+import store from "/imports/ui/vuexStore.js";
+
+if (window){
+  window.onpopstate = function(event){
+    let state = event.state;
+    let numDialogs = store.state.dialogStack.dialogs.length;
+    if (_.isFinite(state.openDialogs) && numDialogs > state.openDialogs){
+      store.commit("popDialogStackMutation");
+    }
+  };
+}