fix multi-tab: check for save on quit
fix multi-tab: check for save on quit

jmarshallnz/gummi,jmarshallnz/gummi,tonyolag/gummi-vim,jmarshallnz/gummi,tonyolag/gummi-vim,tonyolag/gummi-vim,tonyolag/gummi-vim,jmarshallnz/gummi