Fix year

Signed-off-by: Mario Danic <mario@lovelyhq.com>

src/main/java/com/owncloud/android/datamodel/DecryptedPushMessage.java

@@ -2,7 +2,7 @@
  * Nextcloud application
  *
  * @author Mario Danic
- * Copyright (C) 2017-2017 Mario Danic <mario@lovelyhq.com>
+ * Copyright (C) 2017-2018 Mario Danic <mario@lovelyhq.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by