[MRG] Phase two of merges from ckeditor4 - mainly moving contents of tiki-auto_save.php into services
Also various enhancements and fixes for inline editing
Full merge info here: https://dev.tiki.org/Inline+Editing#Notes_etc

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@46916 b456876b-0849-0410-b77d-98878d47e9d5