A recent picture is a last picture but a last picture is not a recent picture.
A recent category is a last category but a last category is not a recent category.
So it's a proposition about last is not like recent.
Improvement of string including decimal number in order to concord singular and plural.
Now, function l10n_dec must be used.
git-svn-id: http://piwigo.org/svn/trunk@1637 68402e56-0260-453c-a942-63ccdbb3a9ee