Fixed boost forcing compiler to 2013
Fixed spelling of DESURA_OFFICIAL_BUILD and also enabled it for all projects when OFFICIAL_BUILD is on

Conflicts:
	src/executable/bootloader_win/CMakeLists.txt
	src/executable/bootloader_win/code/DesuraMain.cpp
	src/executable/bootloader_win/code/UpdateFunctions.cpp
	src/executable/dumpgen_win/CMakeLists.txt
	src/static/util_bootloader_official/code/UpdateFunctionsNonGpl.cpp