removal, file name for picture and .php extension removal)
fix: added unsigned for column in install sql - for the sake of uniformization
change: add_url_param is now add_url_params and takes an array as parameter
instead of a string
git-svn-id: http://piwigo.org/svn/trunk@1094 68402e56-0260-453c-a942-63ccdbb3a9ee