* display errors as tooltips, so that they don't stretch the table,
* make sure the "Add row" button is always displayed when the formset
was created with extra>0
* don't delete extra empty rows from the end when the table when it is
being redisplayed with errors
* make sure that only the "add row" button is clickable, not whole
footer
* make sure the fields with errors are displayed as red
Change-Id: I7202965ba59f3565d350462c833d604782f7cc70
35b4024770