WIKI-930 use offset() instead of position() to get top value of element correctly
WIKI-936 Always send mail for wiki page watcher when page is edited
WIKI-930 escape special character in id when select html element by id
SWF-2923 : Create pkg-improv branch and update projects versions

Signed-off-by: Arnaud Héritier <aheritier@exoplatform.com>