kfind can perform much more fine grained searched than what the dolphin
KIO slave does - it has case-sensitivity, MIME type, modification time,
owner (user and group) options and more
Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
that way the user will not have to guess them, the option to insert
non-system user or group remains just in case but may be disabled in the
future
Signed-off-by: Ivailo Monev <xakepa10@gmail.com>