Added web_interface_utils.cpp/.h to common to provide string based functions for outputting JSON
Adjusted CMake to include rapidjson library and new web_interface_utils.h/cpp to common
Currently, I have code set up hackishly for testing so do not think it is final. It is merely for demonstrating what I've done and played with.
Cleaned up the problems. Tested on Linux. Still need to test on windows.
Conflicts:
common/CMakeLists.txt
common/MiscFunctions.cpp
common/MiscFunctions.h
common/debug.cpp
world/Adventure.cpp