forward port of 0 file size upgrade fix

docs/changelog/6.x.x.txt

@@ -32,6 +32,7 @@
  - fix [ 1410127 ] User profile fields do not display value \'0\'
  - fix [ 1427600 ] Prevent Proxy caching on - URL issue
  - fix [ 1413032 ] AdminBar text unreadable in some cases. w/ fix
+ - fix [ 1428117 ] Uploading files with 0 size
 
 6.8.5
  - fix [ 1396957 ] Insufficient privileges check on the DataForm

lib/WebGUI/Asset/Wobject/EventManagementSystem.pm

@@ -545,7 +545,7 @@ sub www_editEvent {
 			    },
 		-defaultValue => "and"
 		-label => $i18n->get("add/edit event operator"),
-		-label => $i18n->get("add/edit event operator description"),
+		-hoverHelp => $i18n->get("add/edit event operator description"),
 	 );
 
 	 $f->selectBox(

lib/WebGUI/Storage.pm

@@ -201,6 +201,7 @@ sub addFileFromFormPost {
 		return $filename if $attachmentCount > $attachmentLimit;
 		my $tempFilename = $upload->filename();
 		next unless $tempFilename;
+		next unless $upload->size > 0;
 		if ($tempFilename =~ /([^\/\\]+)$/) { $tempFilename = $1; }
 		my $type = $self->getFileExtension($tempFilename);
 		if (isIn($type, qw(pl perl sh cgi php asp))) { # make us safe from malicious uploads