[web/data] Remove broken jquery-json plugin (closes #3590335)
Conversion of Date() objects is somehow broken (don't know why beyond that it's
due to jquery-json's monkeypatched Date.toJSON() method).
Use the now-standard JSON.stringify() instead. http://caniuse.com/#feat=json
says it's supported by all browsers, and even IE going back to version 8.
<table class="attributeForm" style="width:100%;"
tal:attributes="id tab_id | nothing;
class tab_class | nothing;">
<tr tal:iter="widget lines">
<th class="labelCol" tal:content="structure python:widget.render_label(entity)">attrname</th>
<td tal:define="error python:widget.render_error(entity)" style="width:100%;"
tal:attributes="class python:error and 'error' or nothing">
<div tal:replace="structure error">error message if any</div>
<div tal:replace="structure python:widget.edit_render(entity)" >widget (input, textarea, etc.)</div>
<div tal:replace="structure python:widget.render_help(entity)">format help if any</div>
</td>
</tr>
</table>