Add copyright headers in all source files

src/ui/widgets/webview.cpp

@@ -1,3 +1,26 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Oleg Shparber
+** Copyright (C) 2013-2014 Jerzy Kozera
+** Contact: http://zealdocs.org/contact.html
+**
+** This file is part of Zeal.
+**
+** Zeal 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.
+**
+** Zeal 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 Zeal. If not, see <http://www.gnu.org/licenses/>.
+**
+****************************************************************************/
+
 #include "webview.h"
 
 #include "../mainwindow.h"