narval #5762043 narval controller should not make Redirect [validation pending]

it's not a good idea, and when using signedrequest, it's just broken (python-requests follows the Redirect by issuing a GET with the same headers (eg. signedrequest md5 signature) which thus ends by an authentication failure)...

priorityimportant
typebug
done in4.2.1
load0.250
load left0.000
closed by#2b1550907a92 [views] do not issue a Redirect in the narval-file-append Controller (closes #5762043)
patch[views] do not issue a Redirect in the narval-file-append Controller (closes #5762043) [applied]