bug #5139 :  Use the last version of OfficeOnline tool for the online edition of documents (webdav access) that fixes some bugs (with the URL of documents whose the name has non-ASCII characters).
bug #5139 :  Put the office launcher jarlib in which the bug is fixed
set the stable version at 5.13 for the site deployment
fixing bug #5153
when a WYSWIYG content was updated, callback method was not called
so contribution which embed content was not aware of change (so its update date was not changed too)
fixing bug #5172
parameter 'attachment.index.separately' has been removed inadvertently in v5.12
this fix reintegrates it...
Fixing some unit test failures ...