style: Update copy link button font

webclient/src/Article.js

@@ -83,7 +83,7 @@ function Article({ cache }) {
 					</Helmet>
 
 					<h1>{story.title}</h1>
-					<button onClick={copyLink}>{copyButtonText}</button>
+					<button className='copy-button' onClick={copyLink}>{copyButtonText}</button>
 
 					<div className='info'>
 						Source: {sourceLink(story)}

webclient/src/Style-light.css

@@ -264,7 +264,7 @@ span.source {
 }
 
 .copy-button {
-	font: 2rem/1 'icomoon';
+	font: 2rem/1 'icomoon2';
 	background: transparent;
 	border: none;
 	cursor: pointer;