bug 1260197 - change button type to prevent multiple POSTs

kuma/wiki/jinja2/wiki/includes/page_buttons.html

@@ -21,7 +21,7 @@
   {% if document %}
   {# No save-and-edit on new pages because slug changes confuse it #}
   <li>
-    <button type="submit" class="button positive btn-save-and-edit" data-optimizely-hook="button-save-and-keep-editing button-save-and-keep-editing-{{ location }}"><span>{{ _('Publish and Keep Editing') }}</span><i aria-hidden="true" class="icon-edit"></i></button>
+    <button type="button" class="button positive btn-save-and-edit" data-optimizely-hook="button-save-and-keep-editing button-save-and-keep-editing-{{ location }}"><span>{{ _('Publish and Keep Editing') }}</span><i aria-hidden="true" class="icon-edit"></i></button>
   </li>
   {% endif %}
   <li>