Cleanup headers.

MessengerProj/src/main/java/com/b44t/messenger/AndroidUtilities.java

@@ -1,10 +1,24 @@
-/*
- * This is the source code of Telegram for Android v. 3.x.x.
- * It is licensed under GNU GPL v. 2 or later.
- * You should have received a copy of the license in this archive (see LICENSE).
+/*******************************************************************************
  *
- * Copyright Nikolai Kudashov, 2013-2016.
- */
+ *                          Messenger Android Frontend
+ *                        (C) 2013-2016 Nikolai Kudashov
+ *                           (C) 2017 Björn Petersen
+ *                    Contact: r10s@b44t.com, http://b44t.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 the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later
+ * version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see http://www.gnu.org/licenses/ .
+ *
+ ******************************************************************************/
 
 package com.b44t.messenger;