move underscore Icon to class

src/components/apphost.js

@@ -374,7 +374,7 @@ define(["appSettings", "browser", "events", "htmlMediaHelper"], function (appSet
             return -1 !== supportedFeatures.indexOf(command.toLowerCase());
         },
         preferVisualCards: browser.android || browser.chrome,
-        moreIcon: browser.android ? "dots-vert" : "dots-horiz",
+        moreIcon: browser.android ? "more_vert" : "more_horiz",
         getSyncProfile: getSyncProfile,
         getDefaultLayout: function () {
             if (window.NativeShell) {

src/components/guide/tvguide.template.html

@@ -33,6 +33,6 @@
         <i class="material-icons arrow_back"></i>
     </button>
     <button is="paper-icon-button-light" type="button" class="btnNextPage">
-        <i class="material-icons">arrow_forward</i>
+        <i class="material-icons arrow_forward"></i>
     </button>
 </div>