Add missing templates

templates/flash_msg.html

@@ -0,0 +1,12 @@
+{% with messages = get_flashed_messages() %}
+  {% if messages %}
+    {% for message in messages %}
+      <div class="alert alert-success alert-dismissible" role="alert">
+        <button type="button" class="close" data-dismiss="alert" aria-label="Close">
+          <span aria-hidden="true">&times;</span>
+        </button>
+        {{ message }}
+      </div>
+    {% endfor %}
+  {% endif %}
+{% endwith %}