Automatically acknowledge delivery reports of sent messages
Automatically acknowledge delivery reports of sent messages

This solves a bug in which the chat plasmoid could show an unread
message count when there are no unread messages

KDE/ktp-common-internals,leonhandreke/ktp-common-internals,KDE/ktp-common-internals,leonhandreke/ktp-common-internals,leonhandreke/ktp-common-internals,KDE/ktp-common-internals