sp

Results 3 issues of sp

- The PR is mostly on what to do - needs UI beautification

For example - Hide cgroups, unimplemented metrics sections in darwin - Hide iostats per process if not running as root (or similar capabilities) on linux.

bug
help wanted

Currently the mysql libraries are tested only on Percona 5.5/5.6 distribution. We should ideally be able to detect the MySQL version and selectively enable/disable certain parts of metrics

enhancement
help wanted