HTML escape.
Adds an id attribute to the private label on the issue form (#8894).
Additional escaping.
html_escape issue fields
Fixes mail handler for when there's no attachments (#8651).
Fixed: attachments from Apple Mail not added by mail handler (#8651).
Use #blank? instead.
Test that forms are well-formed for issue attachment upload.
Additional functional tests for issue attachment upload.
Fixed: file uploads broken by r6312 (#8912).
