Add space to Add/Edit Event in the EMS.

Allow the Navigation Asset to set the MIME type of its output.
Upgrade script, Wobject code, documentation.
Add a new MimeType form element, stolen out of the Snippet and
generalized for use.

docs/changelog/6.x.x.txt

@@ -31,6 +31,9 @@
    Rich Editor across the entire site without querying the user.
  - Commit options have been removed from the Asset Manager "More" and Wobject
    type icon context menus.
+ - The Navigation Asset now allows setting the MIME type of its output so that
+   you can generate non-HTML navigations or take advantate of the Google
+   SiteMap feature.
 
 6.8.7
  - fix [ 1431098 ] op=becomeUser can become non-existent userIds

docs/upgrades/upgrade_6.8.6-6.9.0.pl

@@ -33,6 +33,7 @@ updateDatabaseLinksAndSQLReport();
 addWorkflow();
 ipsToCIDR();
 addDisabletoRichEditor();
+addNavigationMimeType();
 
 finish($session); # this line required
 
@@ -408,6 +409,12 @@ sub addDisabletoRichEditor {
 	$session->db->write("alter table RichEdit add column disableRichEditor int(11) default '0'");
 }
 
+#-------------------------------------------------
+sub addNavigationMimeType {
+	print "\tAdding Mime Type to Navigations.\n" unless ($quiet);
+	$session->db->write("alter table Navigation add column mimeType varchar(50) default 'text/html'");
+}
+
 #-------------------------------------------------
 sub ipsToCIDR {
 	print "\tTranslating IP addresses to CIDR format.\n" unless ($quiet);