[Owncloud] Merge of routing branch

[Bart Visscher]

Hello everyone,

I am going to merge the routing branch this weekend. Everything should
keep working, let me know if it breaks something.

With routing we can define our own url structure, and connect simple
functions to that. It also simplifies the creation of REST endpoints,
the conversion of PUT/GET/DELETE/etc to functions is all handled for
you.

There are a couple of usage examples in the code, and also in the
ocs_api branch. After the merge i will convert some more.

Bart