Allow special characters in folder name when using e-mail filter
When trying to create a e-mail filter to move e-mails to a folder with a special character like a apostrophe (
'), a error is shown that the regex doesn't allow this.
Steps to reproduce
- Create a e-mail folder with a apostrophe in the name, e.g.
I'm a folder
- Try to create a e-mail filter to move e-mail to this folder when a certain condition is met.
Special characters that are allowed in mailfolder names should be allowed in the regex.
Server OS + version: Debian 10
ISPConfig version: 3.2.7p1
Change the regex in https://git.ispconfig.org/ispconfig/ispconfig3/-/blob/develop/interface/web/mail/form/mail_user_filter.tform.php#L124 and https://git.ispconfig.org/ispconfig/ispconfig3/-/blob/develop/interface/web/mailuser/form/mail_user_filter.tform.php#L125
(while we're at it, check why it's on different lines when the file should be identical)