fix breadcrumb look of Files in navigation panel

core/css/styles.css

@@ -82,7 +82,7 @@ form.searchbox { display:inline; position:fixed; top:.9em; right:9em; margin:0;
 input[type="search"] { font-size:1em; padding-left:2em; background:#eee url('../img/actions/search.png') .5em center no-repeat; }
 
 /* NAVIGATION ------------------------------------------------------------- */
-#plugins { position:fixed; top:3.5em; float:left; width:15.7em; padding:0; z-index:0; }
+#plugins { position:fixed; top:3.5em; float:left; width:15.7em; padding:0; z-index:50; }
 #plugins ul { list-style-type:none; border-top:1px solid #ccc; }
 #plugins a { display:block; padding:0.5em 0.5em 0.5em 3em; background-position:1.5em center; background-repeat:no-repeat; border-bottom:1px solid #ddd; border-top:1px solid #fff; text-decoration:none; font-size:1.2em; color:#666; }
 #plugins a.active, #plugins a:hover, #plugins a:focus, #plugins a.selected { background-color:#ccc; border-top:1px solid #ccc; border-bottom:1px solid #ccc; color:#000; outline:0; }