added fpdi for insertion of vectorized PDF logos in contactsheet. Added option contact_sheet_logo_resize to use 300ppi or PDF dimensions rather than sizing the graphic relative to the page. Fixed incorrect page height calculations added by footer space. Fixed relative paths to contact_sheet_logo based on the example in config.

git-svn-id: http://svn.montala.net/svn/resourcespace@4290 c08608d7-6e46-0410-86ca-f2a6f1370df5
fix for last

git-svn-id: http://svn.montala.net/svn/resourcespace@4291 c08608d7-6e46-0410-86ca-f2a6f1370df5
revert unintended commit

git-svn-id: http://svn.montala.net/svn/resourcespace@4292 c08608d7-6e46-0410-86ca-f2a6f1370df5