KTp/Tasks/Metacontacts

Metacontacts

Goals

* Merge contacts from various contacts (i.e same person on Facebook + Jabber) appear as one entry in the list.
* Still see individual contact information, start chats with contacts.
* From within a chat, select a different account to talk to the same person.
* Optionally show names/avatar from KDE PIM sources as well as Tp.
* KDE Telepathy needs to STILL WORK when nepomuk is disabled, but I'm happy for it to not have metacontact support etc.

Library Use Cases

Contact List

We need a model of all people, with child nodes for each contact.

From a handler (text-ui) POV we need to be able to get a person from an individual Tp::Contact. This should NOT load the entire model then search for the correct person.