Fix css conflict of YMarks.html to make it viewable.

yacy-ymarks.css sidebar conflicts with bootstraps sidebar (different
overlay settings). Simply renamed it to ymark-sidebar.

htroot/YMarks.html

@@ -49,7 +49,7 @@ To see a list of all APIs, please visit the <a href="http://www.yacy-websuche.de
 			<p/>
 			-->
 		</div>
-		<div id="ymarks_sidebar" class="sidebar" style="overflow: auto;">
+		<div id="ymarks_sidebar" class="ymark-sidebar" style="overflow: auto;">
 			<ul>
 				<li><a href="#ymarks_nav_tab" title="navigation"><span>Explorer</span></a></li>
 				<li><a href="#ymarks_tags_tab" title="tags"><span>Tag Manager</span></a></li>

htroot/env/yacy-ymarks.css

@@ -9,7 +9,7 @@
 }
 
 /* Sidebar */ 
-#ymarks_body div.sidebar {     
+#ymarks_body div.ymark-sidebar {     
   width:250px;
   float:right; 
   margin-right: 10px;