Merge pull request #1192 from JeffPyeBrook/pr-121-uk-country-updates

Hide legacy countries from lists
Change legacy key
Fix issue that was false alarming a recursion condition in country class initialization
* Replaced missing code for tracking initializations in progress.  Not having the code was causing initialization recursion warning false alarms
* Removed superfluous code that was checking for, and forcing the, pre-mature initialization of country data maps.

*Also...*
* Make sure country being updated exists
* Fix some typos in variable names
* Code from WPSC_Country class that was directly accessing database now part of the WPSC_Countries class.  All direct access to countries data is now in the WPSC_Countries service class.
* Moved save country routine with direct database access into WPSC_Countries service class.  All the code that accesses the database for countries is together.