Add chat and call support in contacts manager.

Added two buttons to chat or call a contact. When clicked the contacts manager is closed to talk or chat with the contact. This feature does not yet support calling/chatting multiple instances of a contact.
Here they are combined.
![contacts-manager](https://cloud.githubusercontent.com/assets/4820641/5043723/8b673052-6be8-11e4-8024-157852969b33.png)