save profiles with non-english usernames

[Kebap]

Brief summary of issue / Description of requested feature:

people can't save their profiles on windows with non-english usernames - no history is written.

Steps to reproduce the issue / Reasons for adding feature:

1. Create profile with non-english name
2. Try and save profiles
3. Try and load profiles

Error output / Expected result of feature

Did not try to reproduce myself, yet.

Extra information, such as Mudlet version, operating system and ideas for how to solve / implement:

As reported by Vadi here: #1616

[vadi2]

#1847 fixes the issue.