add option to create zip from build script

LICENSE.md

@@ -1,5 +1,5 @@
 Zarafa Webapp Password Change Plugin
-Copyright (C) 2017  Saket Patel <silentsakky@gmail.com>
+Copyright (C) 2013 - 2017  Saket Patel <silentsakky@gmail.com>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU Affero General Public License as published by

build.xml

@@ -233,5 +233,13 @@
 				<exclude name="**/LC_MESSAGES/*.po"/>
 			</fileset>
 		</copy>
+
+		<!-- Create zip file for release (ant -Drelease=true) -->
+		<if>
+			<isset property="release" />
+			<then>
+				<zip destfile="${target-folder}/${plugin}.zip" update="true" basedir="${target-folder}/${plugin}" />
+			</then>
+		</if>
 	</target>
 </project>

js/ABOUT.js

@@ -6,7 +6,7 @@ Ext.namespace('Zarafa.plugins.passwd');
  * The copyright string holding the copyright notice for the Zarafa passwd Plugin.
  */
 Zarafa.plugins.passwd.ABOUT = ""
-	+ "<p>Copyright (C) 2017  Saket Patel &lt;silentsakky@gmail.com&gt;</p>"
+	+ "<p>Copyright (C) 2013 - 2017  Saket Patel &lt;silentsakky@gmail.com&gt;</p>"
 
 	+ "<p>This program is free software: you can redistribute it and/or modify "
 	+ "it under the terms of the GNU Affero General Public License as "