Add ability to override config settings that are array of strings
fix style violations
fix yet more style violations
change array eparator character in override for arrays of string to comma, and allow it to be escaped
fix docs where they were referring to the wrong seprator used for overriding config entries that are array of string
Merge pull request #421 from saadmufti/config_override_handle_array

Add ability to override config settings that are array of strings