Update maintainers' copyright and use DEP-5 copyright format

debian/changelog

@@ -2,6 +2,9 @@ debian-junior (1.25) UNRELEASED; urgency=medium
 
   * tasks/programming: Fix description. (Closes: 788483)
   * Bump Standards-Version to 3.9.7, no changes needed
+  * d/copyright
+    - Update to DEP-5 copyright format
+    - Update maintainers' copyrights
   * Use HTTPS for Vcs-* URLs
   * tasks/education:
     - Add fracplanet

debian/copyright

@@ -1,5 +1,27 @@
-This package is Copyright 2001 by Ben Armstrong <synrg@sanctuary.nslug.ns.ca>
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: debian-junior
+Source: https://wiki.debian.org/Teams/DebianJr
 
-This software is licensed under the GPL.
+Files: *
+Copyright: 2001-2008 Ben Armstrong <synrg@sanctuary.nslug.ns.ca>
+           2008-2010, 2012, 2014, 2015 Andreas Tille <tille@debian.org>
+           2014, 2016 Per Andersson <avtobiff@debian.org>
+License: GPL-3+
 
-On Debian systems, the GPL can be found at /usr/share/common-licenses/GPL.
+License: GPL-3+
+ 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/>.
+ .
+ On Debian systems, the full text of the GNU General Public
+ License version 3 can be found in the file
+ `/usr/share/common-licenses/GPL-3'.