[Svn] [roundcube/roundcubemail] fb2f21: Add id attribute to the installer warning

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/roundcube/roundcubemail
  Commit: fb2f213d6fb3b3827f7618dcd52b86ccdc645742
      https://github.com/roundcube/roundcubemail/commit/fb2f213d6fb3b3827f7618dcd52b86ccdc645742
  Author: Aleksander Machniak <alec at alec.pl>
  Date:   2017-12-24 (Sun, 24 Dec 2017)

  Changed paths:
    M index.php

  Log Message:
  -----------
  Add id attribute to the installer warning