fixing heading and code formatting mismatch
adding cpu counters to common
sorting by counter name to make it more readable
sorting by name, trimming help
adding recommended asp.net counters
we know enough now to know:

 - Histograms will be a listener of some sort, on a metric/probe output and
   will produce its own Measures.
 - Timer will either be implemented through a ZipKin-like correlation id/span
   abstraction or through a simple function that starts a timer and stops a
   timer, making a function call in between

So we can remove these interfaces
no need for a category when getting the current instance