Add hierarhical managment

backend/wordpress/wp-content/plugins/groups/COPYRIGHT.txt

@@ -0,0 +1,33 @@
+
+ Groups
+ 
+ Copyright 2011-2018 "kento" (Karim Rahimpur) www.itthinx.com
+ 
+ The files COPYRIGHT.txt and LICENSE.txt as well as ALL NOTICES IN THE
+ HEADERS OF ALL FILES MUST BE KEPT INTACT.
+
+ GPL-licensed
+ 
+ Unless otherwise stated, all code in this plugin is licensed under
+ the GPL License:
+ 
+ All code is part of this plugin,  hereinafter referred to as "program".
+ 
+ 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/>.
+ 
+ 
+ Visit http://www.itthinx.com/ for help, general info and fun.
+ 
+ Plugin page: http://www.itthinx.com/plugins/groups
+