[entity edition] don't remove values from attribute cache on the repository side
This follows changesets 552de9f0c46d, 1527b012802f, 25da1e5c7c50 and 4ba11607d84a.
closes #2423719 ?
<div id="ajaxroot">
<div class="ajaxHtmlHead">
<script src="http://foo.js" type="text/javascript"> </script>
<link rel="stylesheet" type="text/css" media="all" href="qunit.css" />
</div>
<h1>Hello</h1>
</div>