Increase the compile times by including more precompiled headers (#2217)

* Define WIN32_LEAN_AND_MEAN and VC_EXTRALEAN globally
* Use forked version of TUIO, some more work on precompiled headers
* Improvements for the Kameleon module

src/util/sphere.cpp

@@ -25,6 +25,7 @@
 #include <openspace/util/sphere.h>
 
 #include <ghoul/logging/logmanager.h>
+#include <ghoul/opengl/ghoul_gl.h>
 #include <cstring>
 
 namespace {