Set the title of a conversation before the connection of the parteners

After adding a friend the list looks like this:

![screenshot_2014-03-18-16-48-11](https://f.cloud.github.com/assets/2826339/2450927/859cbaec-aec0-11e3-925b-2699d835f556.png)

And when the user tries to chat with his new friend before the information about the other is received it looks like this, no title:

![screenshot_2014-03-18-16-48-19](https://f.cloud.github.com/assets/2826339/2450953/bbea8462-aec0-11e3-98d2-797a07dd9424.png)

Now it looks like this(with a part of the key):

![screenshot_2014-03-18-16-53-40](https://f.cloud.github.com/assets/2826339/2450962/cb56f020-aec0-11e3-92ef-7c6dd5a01cf5.png)

And after the app has the name it will be updated automatically to friend's name:

![screenshot_2014-03-18-16-57-02](https://f.cloud.github.com/assets/2826339/2450977/f7ad5e2a-aec0-11e3-9739-3aebbe693972.png)


Note: The changes in the xml files are already merge and are the same as in the merged file. Bad commit timing from my side.