Merge branch 'fix-4030' into 'stable-3.1'

Till Brehm

2016-07-21 4f8673d1eef39fde0e5d1a3ca6580f396f14ff63

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<tmpl_dyninclude name="content_tpl">
<input type="hidden" name="_csrf_id" value="{tmpl_var name='_csrf_id'}" />
<input type="hidden" name="_csrf_key" value="{tmpl_var name='_csrf_key'}" />