Internationalization (Revision #9)

- initial interface language is obtained from the OS

- every text string visible to the user must be localized

To Be Determined:

- date/time/number format options

- local sorting options

Options

- select interface language

- language change requires restart

Testing

add -Di18n.test.mode=1 to the list of JVM options.  Internationalized prompts will be marked with a • dot character (\u2022).  Make sure there are no u2022 symbols in the preferences, as it indicates incorrect implementation.

Setting -Di18n.test.mode=2 results in a prompt key to appear instead of the dot character.