Translate strings of federation admin section

apps/federation/templates/settings-admin.php

@@ -12,13 +12,13 @@ style('federation', 'settings-admin')
 
 	<p>
 		<input id="autoAddServers" type="checkbox" class="checkbox" <?php if($_['autoAddServers']) p('checked'); ?> />
-		<label for="autoAddServers">Add server automatically once a federated share was created successfully</label>
+		<label for="autoAddServers"><?php p($l->t('Add server automatically once a federated share was created successfully')); ?></label>
 	</p>
 
-	<h3>Trusted ownCloud Servers</h3>
+	<h3><?php p($l->t('Trusted ownCloud Servers')); ?></h3>
 	<p id="ocFederationAddServer">
-		<button id="ocFederationAddServerButton" class="">+ Add ownCloud server</button>
-		<input id="serverUrl" class="hidden" type="text" value="" placeholder="ownCloud Server" name="server_url"/>
+		<button id="ocFederationAddServerButton" class=""><?php p($l->t('+ Add ownCloud server')); ?></button>
+		<input id="serverUrl" class="hidden" type="text" value="" placeholder="<?php p($l->t('ownCloud Server')); ?>" name="server_url"/>
 		<span class="msg"></span>
 	</p>
 	<ul id="listOfTrustedServers">