Added a Profile Config to VS2013

Added a project configuration called `Profile` that VS2013 users can simply switch too to enable profiling using the inbuilt code.

Removed the unused `ScopedTimer` struct from `Profiler.h` and added a more useful `MsgTimer` struct to `utils.h`. I used this for outputting timing information about the various stages of loading to see if the `FastMinMax` (#2711) branch was worthwhile.