Fix redundant/missing closing div tags

plugins/managesieve/skins/classic/templates/managesieve.html

@@ -62,7 +62,6 @@
   <roundcube:object name="filterframe" id="filter-frame" width="100%" height="100%" frameborder="0" src="/watermark.html" />
 </div>
 
-</div>
 </div>
 </div>
 

plugins/managesieve/skins/larry/templates/managesieve.html

@@ -14,7 +14,6 @@
 <roundcube:include file="/includes/settingstabs.html" />
 
 <div id="settings-right">
-
 <div id="filtersetslistbox" class="uibox listbox">
 <h2 class="boxtitle"><roundcube:label name="managesieve.filtersets" /></h2>
 <div class="scroller withfooter">
@@ -42,6 +41,8 @@
   </div>
 </div>
 
+</div>
+</div>
 </div>
 
 <div id="filtersetmenu" class="popupmenu">