Enable emoji for wiki view (#3158)

Enable emoji for wiki page content. It is enabled in the edit preview so the view should match.

Signed-off-by: Hamish Carpenter <hamish@hamishcarpenter.com>

templates/repo/wiki/view.tmpl

@@ -73,7 +73,7 @@
 			</div>
 		{{end}}
 		<div class="ui {{if .sidebarPresent}}grid equal width{{end}}" style="margin-top: 1rem;">
-			<div class="ui {{if .sidebarPresent}}eleven wide column{{end}} segment markdown">
+			<div class="ui {{if .sidebarPresent}}eleven wide column{{end}} segment markdown has-emoji">
 				{{.content | Str2html}}
 			</div>
 			{{if .sidebarPresent}}