Remove Boost, love Qt some more

[Sven-Hendrik Haase]

We can kick out all of Boost. We can use Qt's string algorithms, QUuid instead of boost::uid, std::mapstd::unique_ptr instead of boost::ptr_map and we can use Qt for the small stuff as well.

We'll still need to distribute Boost libs with the engine though as others use them. However, the engine will compile quicker and be slimmer. Besides, should only be using one of the behemoth libraries.

One needs to be aware of the implications of this task.