#2 Improve the contactType mechanism

[Jonathan]

So far, a contactType only determines the data structure of a contact. At first, I thought that it would be good to work with all the contactTypes at the same type as one list. This was interesting to store people's personal information with different levels of details, but still be able to broadcast to everyone in one click.

Now because of its flexible structure, this system has the potential to become more than an addressbook, but store all kinds of data. Now assuming that you store events as much as people, you don't want both of these items coming in the same list. Then we could have some types that have their own "tab", that would include their own filters and groups.