If, after moving or deleting a message from the message viewer, no other message can be selected then close the viewer Fixes NB#80276
If, after moving or deleting a message from the message viewer, no
other message can be selected then close the viewer
Fixes NB#80276

pmo-trunk-r4143

community-ssu/modest,community-ssu/modest,community-ssu/modest,community-ssu/modest