Changed the numeric output process used in the arena and ending results

The numeric output process used in the arena and ending results has been changed to use English font when the language setting is English.

Previously, even when the language setting was English, the numeric output used Japanese font, making only the numbers look huge. This change makes the numbers blend in better with the rest of the dialogue.

Also, if the output value is 1000 or more, it now includes a comma between the thousands and hundreds (only if the language setting is English).

This change is meaningful on its own, but the true purpose was to learn how to output variable strings. The results of this study will be explained again at another time.