empathy-chat-window: always display the title of the current tab
empathy-chat-window: always display the title of the current tab

This is more coherent as the web browsers do the same. Thanks to Ryan
LaBelle for his help. (#600473)

GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets,Distrotech/telepathy-account-widgets,Distrotech/telepathy-account-widgets