Added Donate button to Beta

templates/repo/header.tmpl

@@ -88,6 +88,7 @@
 			{{if .Repository.Donate}}
 				<a class="item" href="{{.Repository.Donate}}" target="_blank">
 					<i class="menu-icon octicon">💸</i> {{.i18n.Tr "repo.donate"}}
+					<span class="ui green basic label tiny">Beta</span>
 				</a>
 			{{end}}
 			{{end}}