Fix interface language dropdown opacity

client/src/components/Header.vue

@@ -24,7 +24,6 @@
     font-family: monospace;
 
     .interface-language-dropdown {
-      opacity: .5;
       width: 20px;
       position: absolute;
       right: 10px;

client/src/components/InterfaceLanguageDropdown.vue

@@ -22,6 +22,7 @@
   .interface-language-dropdown {
     img {
       cursor: pointer;
+      opacity: .7;
     }
 
     .menu {

server.ts

@@ -62,6 +62,7 @@ app.use('/opensearch.xml', async function (req, res) {
   <Developer>Framasoft: contact.framasoft.org</Developer>
 </OpenSearchDescription>`).type('application/xml').status(200).end()
 })
+
 app.use('/*', async function (req, res) {
   res.set('Content-Type', 'text/html; charset=UTF-8')