I10n: Edit a page in a language different than english results into a broken editpagedisplay

<div class="floatright">
	<a class="previewBtn" title="Vorschau Ihrer Änderungen." href="/test/tiki-editpage.php?page=test_de"><img src="pics/icons/magnifier.png" alt="Vorschau Ihrer Änderungen." width="16" height="16" style="border: none" class="icon" /></a></div>
		<h1><a class="pagetitle" href="/test/tiki-editpage.php?page=test_de">bearbeiten: test_de</a>
</h1>   

	<!-- templates/tiki-preview.tpl start -->
<div class="wikipreview" style="display:none;" id="autosave_preview"><div>
	<div style="float:right;">
		<select name="diff_style" id="preview_diff_style">
			<option value="" selected="selected">Vorschau</option>

			<option value="htmldiff" >HTML diff</option>
			<option value="sidediff" >Side-By-Side Vergleich</option>
		</select>
				<a title="Popup preview" onclick="ajax_preview( 'editwiki', autoSaveId );$('#autosave_preview').hide();return false;" href="/test/tiki-editpage.php?page=test_de"><img src="pics/icons/arrow_left.png" alt="Popup preview" width="16" height="16" style="border: none" class="icon" /></a>		<a title="Close preview" onclick="$('#autosave_preview').hide();return false;" href="/test/tiki-editpage.php?page=test_de"><img src="pics/icons/close.png" alt="Close preview" width="16" height="16" style="border: none" class="icon" /></a>	</div>
<h2>Vorschau : test_de</h2>
<div align="center" class="attention" style="font-weight:bold">Hinweis: Dies ist nur eine Vorschau und wurde noch nicht gespeichert!</div>
<div  class="wikitext">

</div>
</div><span id="autosave_preview_grippy" class="ui-resizable-handle ui-resizable-s"> </span>
</div>
<hr style="clear:both; height:0px;"/> 
<!-- templates/tiki-preview.tpl end -->

<form  enctype="multipart/form-data" method="post" action="tiki-editpage.php?page=test_de" id='editpageform' name='editpageform'>

	<input type="hidden" name="no_bl" value="y" />
			
							
	
	<table class="formcolor" width="100%">
		<tr>
			<td colspan="2">

									<input type="hidden" name="page" value="test_de" /> 
					
																									


<div id='edit-zone'>
		<div class='textarea-toolbar' id='editwiki_toolbar'>