fix: calendar prev/next links not working properly when 'any' (All/Tout)
was selected
fix: calendar 'any' (All/Tout) not shown on for the day selection
(last calendar level) - it was meaningless
fix: calendar image ordering is by date descending for large periods (no year
selected) or ascending for small periods (week,month...)
git-svn-id: http://piwigo.org/svn/trunk@1163 68402e56-0260-453c-a942-63ccdbb3a9ee