Selected members are not shown on validation error in new membership page

[Yann-BUTSCHER-EIRL]

Scenario

Go to membership/new
Add a new membership with invalid data in the form (e.G string instead of number)
Submit the form

Expected behavior

The validation fails and we are being redirected to membership/new
The selected members are shown in the form
The error message appears

Current behavior

The validation fails and we are being redirected to membership/new
The selected members are not visible, nor the rest of the form
No error message appears, the user doesn't know what happened

Todo

• Load the selected members thanks to javascript
  • You can do it the same way it's done on membership edit