Furter formatting.

While looking through all code in qx.io we find the code heterogeneous and documentation even more.
We propose some changes to make it heterogeneous and easy to read.
Before we further change it, we would like opinions on it from you so the changes will be agreed.

NB! We have not touched the code itself except {} around blocks at this run.

We will send you a suggestion on a proposal of code formatting change separately too for the doocumentation pages.