Change reference of form.error_dict to form.errors

Review Request #8284 — Created July 11, 2016 and submitted — Latest diff uploaded

Information

Djblets
release-0.8.x
a9cf408...

Reviewers

Django forms do not have an error_dict attribute. The correct
attribute is the errors attribute. This was causing form-wide errors
not to appear in some cases.

Submitted a form with errors. Saw the error message at the top of the
form.