Fixes an error occurring when editing a User as Developer when the ToS have been signed.
By disabling the input of the field Django will not attempt to wrongly parse it as a DateTime instance.
Patch by: Haoyu Bai
Reviewed by: Lennard de Rijk
# Please sort this file in alphabetical order by last (given) name.
# Please only include one name per line. If an (optional) email address is
# included, it must be RFC 2821 compliant (properly quoted, escaped, etc.).
# Lines beginning with # can be stripped from the file, as can blank lines.
"Madhusudan.C.S" <madhusudancs@gmail.com>
"Haoyu Bai" <baihaoyu@gmail.com>
"Mario Ferraro" <fadinlight@gmail.com>
"Todd Larsen" <tlarsen@google.com>
"Chen Lunpeng" <forever.clp@gmail.com>
"Sverre Rabbelier" <sverre@rabbelier.nl>
"Lennard de Rijk" <ljvderijk@gmail.com>
"Pawel Solyga" <pawel.solyga@gmail.com>