Fix randomly disappearing folders list in IE (#1487704)

CHANGELOG

@@ -1,6 +1,8 @@
 CHANGELOG Roundcube Webmail
 ===========================
 
+- Fix randomly disappearing folders list in IE (#1487704)
+- Fix list column add/removal in IE (#1487703)
 - Fix login redirect issues (#1487686)
 - Require PHP 5.2.1 or greater
 - Fix %h/%z variables in username_domain option (#1487701)

skins/default/iehacks.css

@@ -237,6 +237,11 @@ table.records-table thead tr td
   margin-top: 2px;
 }
 
+#directorylistbox div
+{
+  min-height: 0;
+}
+
 .contactfieldgroup legend
 {
 	padding: 0 0 0.5em 0;

skins/default/templates/addressbook.html

@@ -40,6 +40,7 @@
   <roundcube:object name="directorylist" id="directorylist" />
   <roundcube:object name="groupslist" id="contactgroupslist" />
 </div>
+<!--[if lte IE 7]><div></div><![endif]-->
 <div class="boxfooter">
   <roundcube:button command="group-create" type="link" title="newcontactgroup" class="buttonPas addgroup" classAct="button addgroup" content=" " />
   <roundcube:button name="groupmenulink" id="groupmenulink" type="link" title="groupactions" class="button groupactions" onclick="rcmail_ui.show_popup('groupmenu');return false" content=" " />