[REVERT] web: 4174 revid:dle@openerp.com-20140415130732-bud8xb3pzgxw2imr, break the kanban drag and drop, which is far more important than the show more button wrongly displayed in ie.
[MERGE] Forward-port of latest 7.0 bugfixes, up to rev. 4177 revid:dle@openerp.com-20140417160919-ftwk0jtci9dwuu7h