Regression on ManytoMany representation in the admin interface

[CARRIERE Etienne]

Hi,

We have discovered a small regression in 1.7 with the ManytoMany representation in admin page :
Configuration to reproduce :

• Have a ManytoManyField
• Put the ManytoManyField as a filter_horizontal block (I am not sure if it is mandatory)

Behaviour :

• Before the #13165 ticket commit, below the 'form-row' div, we have a second div (without class) and below this block is directly the different blocks
  • The label
  • The elements for the widget => in the same level as the other elements
  • The help paragraph

With the javascript in SelectFilter2 (in admin/js), the help paragraph is put on the first place of the div block (the one without class)

• After the #13165, a div block ( 'related-widget-wrapper' ) has been added so that the second div looks like :
  • The label
  • A new div 'related-widget-wrapper'
  • The help paragraph

Proposal to solve
I see 2 methods to solve the bug

• Don't use the 'related-widget-wrapper' for the ManytoMany as the ticket #13165 was made only for the classical ForeignKey
• Modify the SelectFilter2 js to adapt to the new block