roster filter: shows only first contacts in meta-contact
Bug description
Roster filter show subcontact of a meta-contact only if it is the first contact.
Steps to reproduce
Have a meta-contact that includes at least two contacts with different nicknames. Then try to filter roster with the name of subcontact which is not the first.
Software versions
GTK version: 2.24.10
PyGTK version: 2.24.0