DispatchDialogue : Remove INFO message on success.
DispatchDialogue : Remove INFO message on success.

Also hiding Details collapsible if there are no messages.

hradec/gaffer,ivanimanishi/gaffer,GafferHQ/gaffer,lucienfostier/gaffer,ImageEngine/gaffer,andrewkaufman/gaffer,hradec/gaffer,andrewkaufman/gaffer,hradec/gaffer,ivanimanishi/gaffer,boberfly/gaffer,boberfly/gaffer,GafferHQ/gaffer,GafferHQ/gaffer,ImageEngine/gaffer,johnhaddon/gaffer,johnhaddon/gaffer,boberfly/gaffer,andrewkaufman/gaffer,appleseedhq/gaffer,GafferHQ/gaffer,appleseedhq/gaffer,GafferHQ/gaffer,lucienfostier/gaffer,ivanimanishi/gaffer,boberfly/gaffer,andrewkaufman/gaffer,johnhaddon/gaffer,appleseedhq/gaffer,ImageEngine/gaffer,andrewkaufman/gaffer,appleseedhq/gaffer,hradec/gaffer,lucienfostier/gaffer,ivanimanishi/gaffer,johnhaddon/gaffer,ImageEngine/gaffer,lucienfostier/gaffer,johnhaddon/gaffer,hradec/gaffer