fix radiogroup to call proprer render_element

src/elements/element_panel.erl

@@ -1,13 +0,0 @@
--module(element_panel).
--author('Maxim Sokhatsky').
--include("nitro.hrl").
--compile(export_all).
-
-render_element(Record) ->
-   wf_tags:emit_tag(<<"div">>, nitro:render(Record#panel.body),
-     lists:append([
-       [{<<"id">>,   Record#panel.id},
-       {<<"class">>, Record#panel.class},
-       {<<"style">>, Record#panel.style}],
-       Record#panel.data_fields,
-       Record#panel.aria_states])).

src/elements/element_radiogroup.erl

@@ -6,7 +6,7 @@
 render_element(Record) -> 
     ID = Record#radiogroup.id,
     Body = apply_name(ID, Record#radiogroup.body),
-    element_panel:render_element(#panel {
+    wf_render_elements:render_element(#panel {
         id=ID,
         class=[radiogroup, Record#radiogroup.class],
         style=Record#radiogroup.style,