Removed black line from contact list and message list

css/_chat.scss

     font-size: 10pt;
     width: 100%;
     height: 90%;
-    overflow-y: scroll;
-    overflow-x: hidden;
+    overflow: auto;
     word-wrap: break-word;
 
     a:link {

css/_contact_list.scss

         margin: 0px;
         padding: 0px;
         width: 100%;
-        overflow-y: scroll;
-        overflow-x: hidden;
+        overflow: auto;
     }
 
     .clickable {