core: fix oauth login redirect url (#1172)

packages/ui-default/templates/partials/login_dialog.html

@@ -42,7 +42,7 @@
         {% endif %}
         {%- for v in loginMethods -%}
         <div class="row"><div class="columns">
-          <a href="{{ url('user_oauth', type=v.id) }}" class="expanded rounded button">{{ _(v.text) }}</a>
+          <a href="{{ url('user_oauth', type=v.id, query={redirect: handler.request.url}) }}" class="expanded rounded button">{{ _(v.text) }}</a>
         </div></div>
         {%- endfor -%}
         <div class="row"><div class="columns">