Update LICENSE (#1604)

* Update LICENSE

* Move back GNU FDL

* Final update LICENSE

- https://www.gnu.org/licenses/gpl.txt
- https://www.gnu.org/licenses/fdl.txt

* Trim trailing whitespace

Merge with approval. Licensing is quite picky on alterations however exception made for https since all affected URLs are auto-redirected in all tested browsers to https.

Author: Hongarc

LICENSE

@@ -1,7 +1,7 @@
                     GNU GENERAL PUBLIC LICENSE
                        Version 3, 29 June 2007
 
- Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
@@ -645,7 +645,7 @@ the "copyright" line and a pointer to where the full notice is found.
     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/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 Also add information on how to contact you by electronic and paper mail.
 
@@ -664,14 +664,14 @@ might be different; for a GUI interface, you would use an "about box".
   You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU GPL, see
-<http://www.gnu.org/licenses/>.
+<https://www.gnu.org/licenses/>.
 
   The GNU General Public License does not permit incorporating your program
 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
-<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
 
 
 
@@ -680,7 +680,7 @@ Public License instead of this License.  But first, please read
 
 
  Copyright (C) 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
-     <http://fsf.org/>
+     <https://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
@@ -1053,7 +1053,7 @@ The Free Software Foundation may publish new, revised versions of the
 GNU Free Documentation License from time to time.  Such new versions
 will be similar in spirit to the present version, but may differ in
 detail to address new problems or concerns.  See
-http://www.gnu.org/copyleft/.
+https://www.gnu.org/licenses/.
 
 Each version of the License is given a distinguishing version number.
 If the Document specifies that a particular numbered version of this