Template export is wrapped up

Tux Paint Config. has an option to disable/enable.
Closing https://sourceforge.net/p/tuxpaint/feature-requests/236/

docs/CHANGES.txt

@@ -37,7 +37,7 @@ https://tuxpaint.org/
 
   * Other Improvements:
     -------------------
-    * WIP - Saved pictures can, from the Open dialog, be copied into
+    * Saved pictures can, from the Open dialog, be copied into
       the user's templates directory, and used as backgrounds
       for other drawings by selecting it from the New dialog.
       + If the original image has already been exported as a template,
@@ -48,9 +48,6 @@ https://tuxpaint.org/
         - identical image data (CRC checksum)
       Closes https://sourceforge.net/p/tuxpaint/feature-requests/236/
       Bill Kendrick <bill@newbreedsoftware.com>
-      + TODO - Need to allow the ability to turn this feature off.
-        - tuxpaint-docs,tuxpaint: Document in OPTIONS docs
-        - tuxpaint-config: Add support to Tux Paint Config.
 
   * Bug Fixes:
     ----------