[FIX] editpage: Completely split up import and export fieldsets on the properties tab, ensuring tags are always closed correctly.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48532 b456876b-0849-0410-b77d-98878d47e9d5
[FIX]Fix SEF url to subscribe to a newsletter

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48533 b456876b-0849-0410-b77d-98878d47e9d5
[FIX]Usability Fix. to allow shorter intuitive urls for newsletters (nl1). Closes https://dev.tiki.org/item4893

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48534 b456876b-0849-0410-b77d-98878d47e9d5