Add ability to check permissions by player name

src/main/java/fr/xephi/authme/permission/handlers/VaultHandler.java

@@ -31,6 +31,11 @@ public class VaultHandler implements PermissionHandler {
         return vaultProvider.has(player, node.getNode());
     }
 
+    @Override
+    public boolean hasPermission(String name, PermissionNode node) {
+        return vaultProvider.has("", name, node.getNode());
+    }
+
     @Override
     public boolean isInGroup(Player player, String group) {
         return vaultProvider.playerInGroup(player, group);