use fontawesome

src/main/webapp/css/app.css

@@ -1,9 +1,3 @@
-@import url(http://weloveiconfonts.com/api/?family=openwebicons);
-
-[class*="openwebicons-"]:before {
-	font-family: 'OpenWeb Icons', sans-serif;
-}
-
 .pointer {
 	cursor: pointer;
 }

src/main/webapp/templates/_subscribe.html

@@ -1,6 +1,6 @@
 <div ng-controller="SubscribeCtrl">
 	<div class="btn-group">
-		<button class="btn" ng-click="open()"><span class="openwebicons-feed-simple"></span> Subscribe</button>
+		<button class="btn" ng-click="open()"><span class="icon-rss"></span> Subscribe</button>
 		<button class="btn dropdown-toggle" data-toggle="dropdown">
 			<span class="caret"></span>
 		</button>