Fixed bug read status was not propagated on update
Fixed bug read status was not propagated on update

The problem is that we set the the read status of issues in
MultiModel::add instead of MultiModel::addPending. The first happens on
every change to the model, including updates, whereas the second happens
only when a new model is added.

The fix is to move it to addPending: that's the only time we should
reset the read status of an issue to what is in Preferences.

gaieepo/HubTurbo,HyungJon/HubTurbo,Sumei1009/HubTurbo,saav/HubTurbo,Sumei1009/HubTurbo,Honoo/HubTurbo,saav/HubTurbo,ianngiaw/HubTurbo,gaieepo/HubTurbo,HyungJon/HubTurbo,Honoo/HubTurbo,ianngiaw/HubTurbo