ui improvements

- update dot style
- hide dot and tooltip for quote item
- hide scrollbar on firefox
- add hover effect for control btns
- fix url regex

src/Title.css

@@ -34,6 +34,11 @@
     text-align: center;
     color: black;
 }
+.control-btn:hover {
+    background-color: #555555;
+    color: white;
+    border-radius: 5px;
+}
 
 .control-btn .icon:before {
     margin: .5em;