- Fix jumbled multiple values when hitting the 'add-more' button with more than 10 values.
- Keep 'add more' button text consistent.

#266590 Make sure a view is valid before trying to use it in the nodereference module to fix upgrade errors when the view has not been updated to Views 2.

#258127 Get rid of content_menu_needs_rebuild() in remaining places and only rebuild the menu when absolutely needed.