Special characters crash the import/export utility, such as an apostrophe

[winsomniak]

See forum threads:
https://community.gamedex.io/t/unable-to-import-a-character-with-beorcs-blessing/324
https://community.gamedex.io/t/importing-heroes-doesnt-work-properly/341

I disabled import/export until we can resolve any issues. The feature is worth re-imagining anyways, as the implementation was not very clear or intuitive, and I think a better data format is in order.