* targets are now created in top-level build directory
* more things are now configured through CMake options
* changed debug build detection from NDEBUG to DEV_BUILD
* moved po and desktop directories
* moved last unit test out of src directory
* all tests are now in /test/ subdirectory
* unit tests concatenated to one executable (TODO: ui, common)
* preparation for test environments (OpenGL and others)
* removed old TestCBot