luci-base: properly initialize cbi.js on SimpleForms

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

modules/luci-base/luasrc/view/cbi/simpleform.htm

@@ -52,7 +52,8 @@
 		<%- if not self.cancel then -%><%-:Cancel-%><%-else-%><%=self.cancel%><%end-%>
 	" />
 <% end %>
-		<script type="text/javascript">cbi_d_update();</script>
 	</div>
 </form>
 <% end %>
+
+<script type="text/javascript">cbi_init();</script>