Enable the Save Button if an Attribute is Deleted
Summary:
Regardless of whether the model's row count is 0 or not, if a
row is deleted, the user has to be able to save the modification.
Test Plan:
Create an attribute and save it. Then delete it and try to save it. Before this patch the last save was not
possible.
Reviewers: KDE PIM, dvratil
Reviewed By: KDE PIM, dvratil
Tags: KDE PIM
Differential Revision: https://phabricator.kde.org/D8981