(Bug1364690) Fix print_export_footer missing an argument.

Fix the missing argument in print_export_footer and clear
the messages so they don't redisplay on the next page view.

Change-Id: I1ad1ddc39b120f1dd39c1dff0275c6cba6a9b825
Signed-off-by: Nigel Cunningham <nigelc@catalyst-au.net>
Merge "(Bug1364690) Fix print_export_footer missing an argument."