fix scroller styling

assets/css/browser-solidity.css

@@ -25,6 +25,7 @@ body {
     vertical-align: middle;
     background-color: rgba(255,255,255,0.8);
     height: 100%;
+    font-size: 1.3em;
 }
 
 .scroller i {

index.html

@@ -53,8 +53,8 @@
 		<div id="editor">
 			<span class="newFile" title="New File"><i class="fa fa-file-code-o"></i></span>
 			<div class="files-wrapper">
-				<div class="scroller scroller-left"><i class="glyphicon glyphicon-chevron-left"></i></div>
-				<div class="scroller scroller-right"><i class="glyphicon glyphicon-chevron-right"></i></div>
+				<div class="scroller scroller-left"><i class="fa fa-chevron-left "></i></div>
+				<div class="scroller scroller-right"><i class="fa fa-chevron-right "></i></div>
 				<ul id="files" class="nav nav-tabs"></ul>
 			</div>
 			<span class="toggleRHP" title="Toggle right hand panel"><i class="fa fa-angle-double-right"></i></span>