[Svn] [roundcube/roundcubemail] a4de40: Validate ACL identifiers

[GitHub]

  Branch: refs/heads/release-1.3
  Home:   https://github.com/roundcube/roundcubemail
  Commit: a4de40566deddbedf0b7eba00e7665a8723bc9b2
      https://github.com/roundcube/roundcubemail/commit/a4de40566deddbedf0b7eba00e7665a8723bc9b2
  Author: Aleksander Machniak <alec at alec.pl>
  Date:   2018-01-16 (Tue, 16 Jan 2018)

  Changed paths:
    M plugins/acl/acl.php

  Log Message:
  -----------
  Validate ACL identifiers

... e.g. to prevent cyrus imap issues