Functionality:
===============
  Use of files to save statistics

Installation:
=============
  1: Copy directory fstats in "plugins" subdirectory of your gallery
  2: Install and activate the plugin from the admin page
     On activating, history tables data can be are migrated to files with add in include/config_local.inc.php file following line:
     $conf['fstat_plugin_activate_migrate'] = true;
  3: Afert checks of generated files on migration, you can purge history on database
  4: If you have PhpWebGallery version 1.7.0, it's necessary to replace following files in order to have data in statistic search part:
     admin/history.php by http://svn.gna.org/viewcvs/*checkout*/phpwebgallery/branches/branch-1_7/admin/history.php?rev=2156
     admin/include/functions_history.inc.php by http://svn.gna.org/viewcvs/*checkout*/phpwebgallery/branches/branch-1_7/admin/include/functions_history.inc.php?rev=2156

Usage:
======
  See files at fstats directory.
  On next version, purge, display, summary and export will be available.

Remarks:
==========
  When plugin is activated, there are not history database.
  History options are applied to statistics by files.
  But, purge on maintenance are only for database.