Delay the send signature button for 3 seconds (#240)

* Delay the send signature button for 3 seconds
* Do not hide the submit button

backend/templates/v1/signature.html

@@ -23,7 +23,7 @@
                 </button>
                 </span>
                 <input id="signature-input" type="hidden" name="signature">
-                <button class="btn btn-primary btn-lg" type="submit">
+                <button id="signature-send" class="btn btn-primary btn-lg disabled="disabled" type="submit">
                     Trimite
                 </button>
             </form>
@@ -33,4 +33,11 @@
 
 {% block scripts %}
     <script type="text/javascript" src="{{ static('js/signature.js') }}"></script>
+    <script>
+        $(document).ready(function() {
+            setTimeout(function() {
+                $("#signature-send").removeAttr("disabled");
+            }, 3000);
+        });
+    </script>
 {% endblock %}