Properly implement display of the required ISO 8859 encodings

[ad3154]

What's New:

• Actually implement ISO 8859 character sets above characters 127 for all the encodings specifically required in ISO 11783-6. This should help fix characters that were previously drawn as a tofu character.
  • Add actual support for:
    • ISO 8859-1
    • ISO 8859-2
    • ISO 8859-4
    • ISO 8859-5
    • ISO 8859-7
    • ISO 8859-15
  • Prevent drawing unsupported control characters, which is required in ISO 11783-6
  • Added support for soft hyphen behavior as described in ISO 11783-6
• Fixed a bug when drawing multiple working set objects in the working set selector, where only one would be shown instead of the proper number of working sets

Basically the way this works is that we convert each string with one of those encodings to UTF-8 for Juce to consume.