Revert "divert /etc/apache2/conf.d/roundcube"

This reverts commit 6ef49b5912dc2648b4c477f3cfe1669d302c01c2.
Revert "activate roundcube alias in apache configuration"

This reverts commit fa8aca55bba16909278db5240a3264ec26895e89.
Revert "actually make sieve work and filter emails"

This reverts commit 2fdb16da2ea96a2457f5c79f0499ebd3bc1e2671.
Revert "correctly install roundcube"

This reverts commit 7a73670eac0ec18505290a333e27c6c207aafa14.
Revert "also depend on roundcube-plugins to have managesieve"

This reverts commit 443cd288a08209964c4f862b9fcdb3e4f904e9ab.
Revert "depend on mysql version of roundcube and custom-server-setup"

This reverts commit db3d262f21d8c89ba6e4fcd2ba0670ba2f1d6ac4.
Revert "complete roundcube install to mysql"

This reverts commit 0c1677a35d611e8561c86bc683902107830766b4.
Revert "install sieve for dovecot and roundcube webmail to have easy sieve management"

This reverts commit 0d8b851accfda179b9eb613998b0633ad0e928e9.
Release new package version.