Bugfix SUP-1193
The linkbrowser plugin would filter out attributes from repository elements,
even if the link plugin was configured to display them in the sidebar. This
has been fixed.
Bugfix SUP-2002
If a table was deleted with IE the focus jumped up to the beginning of the
editable. This has been fixed.
Bugfix SUP-1973
The editing helpers in table cells are now added and removed individually in
mouseenter and mouseleave events instead of doing this for all cells
at once. This speeds up the initialization of big tables.