applet: use problem_data_t in ignored problems

Fill a problem data with ID, uuid and duphash.

These information come from DBus Crash signal because a regular user
cannot read neither uuid nor duphash from foreign dump directory.

Related to #684

Signed-off-by: Jakub Filak <jfilak@redhat.com>
dbus notify: send UUID and DUPHASH in Crash signal

Related to #684

Signed-off-by: Jakub Filak <jfilak@redhat.com>
DBus Problems API: update documentation

Related to #684

Signed-off-by: Jakub Filak <jfilak@redhat.com>