Template:Century nationality television seasons category/doc

Creates a category of the form "XXth-century nationality television seasons", where XX is a 2-digit century and nationality is a valid nationality.

e.g.
 * Category:20th-century Australian television seasons ✅
 * Category:20th-century Irish television seasons ✅
 * Category:21st-century Japanese television seasons ✅
 * Category:21st-century Chinese television seasons ✅

Usage
No parameters needed

Errors
If the template is used on invalid page, an error message is generated and the page is categorised in:
 * Category: (population: )

Errors include:


 * The page is not in the category namespace
 * The page's title does not take the form "XXth-century nationality television seasons"
 * The value of "nationality" does not correspond to a country name.  The conversion is made using GetCountryNameFromAdjective, so the problem may be a glitch in that template's lookup table