Autosaves of unnamed files can now be made visible (the dot
is omitted).

The number of backups kept can be set, the default is 1 again.
The location of backups can be chosen: same folder as the file,
$HOME or the tempdir.
The suffix used for the backup file can be chosen. There is
a validator to weed out potentially hazardous characters.

CCMAIL:kimageshop@kde.org
BUG:404395
Differential Revision: https://phabricator.kde.org/D19115