Creating users with illegal charactes is possible

[fyr77]

Describe the bug
When signing up for a new user account, it is possible to enter symbols such as !, but it is then impossible to log in since that field is validated.

To Reproduce
Steps to reproduce the behavior:

1. Create a new account, entering special characters such as ! in the username field
2. Try to log in with that user

Expected behavior
Either all symbols should be allowed, or the signup field should be validated the same as the login field is.

[jamesread]

Okay dokey, I'll get that patched for you, thanks for reporting it!

[jamesread]

Hey @fyr77 , patched in 1.3.1 now, would you mind giving that a go? Thanks :-)