Added hover color for tabs.

styles/new-container.less

@@ -57,6 +57,10 @@
         text-align: center;
         margin: 0 10px;
         min-width: 40px;
+        &:hover {
+          border-radius: 40px;
+          background-color: @gray-lightest;
+        }
       }
 
       .results-filter-title {

styles/right-panel.less

@@ -119,6 +119,10 @@
         background-color: transparent;
       }
     }
+    &:hover {
+      border-radius: 40px;
+      background-color: @gray-lightest;
+    }
   }
 
   .details-progress {