/**********************************************
  Coppermine 1.5.x Plugin - Facebook sharer
  *********************************************
  Copyright (c) 2009 gtgillis and jeepguy_1980
  Copyright (c) 2010 - 2011 papukaija
  Ported to cpg1.5.x by papukaija, based on rev 4392
 
  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License version 3
  as published by the Free Software Foundation.

  ********************************************
  Coppermine version: 1.5.x
  $HeadURL$
  $Revision$
**********************************************/
2011-01-31 {papukaija}
Version 1.7
- Fixed compatibility issue with other plugins
- Fixed the detection of displayimage.php's being loaded (fix in 1.6. didn't work as excepted)
*************************************
2011-01-21 {papukaija}
Version 1.6
- Fixed the detection of displayimage.php's being loaded
****************************
2010-09-08 {papukaija}
Version 1.5
- The relative part for thumbnail's URL is now generated with get_pic_URL() ->
   custom, extension-specific,etc. thumbs should work now
- Removed the restriction of image being the only allowed shareable filetype (FB
  doesn't restrict this, so why should this plugin do it?)
****************************
2010-09-05 {papukaija}
Version 1.4
- Bugfix for FB not finding the thumbnail from the shared picture
- Removed the custom $picture_title's script to switch to the default one as FB's
  sharer.php accepts spaces in URLs
****************************
2010-08-23 {papukaija}
Version 1.3
- Added a new sharing button if js is enabled, otherwise a simple text link is shown
- Removed the included images; they aren't needed any more
***************************
2010-06-27 {papukaija}
Version 1.2
- Ported this plugin to cpg1.5.x
- Removed unnecessary php and html including "target_blank" (use link_target plugin instead)
- The picture's title (for the FB share URL) is now generated in similar way than in displayimage.php
