Consider empty email valid
Summary:
BUG: 411736
FIXED-IN: 5.18
Test Plan:
- open system settings > account details > user manager
- type an email address to your user account
- click on "Apply" button, type your password and press enter/return to confirm
- close the User Manager and reopen it
- clear the email address field
- Apply
The empty email is saved.
Reviewers: Plasma, ngraham
Subscribers: plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D26824