Merge pull request #133 from phunehehe/roundcube

cache for roundcube
fix condition in hostname
Merge pull request #134 from phunehehe/hostname

fix condition in hostname
import https://github.com/opscode-cookbooks/rabbitmq/tree/c1661f584277049421e265282097acc11b39acbd
import https://github.com/opscode-cookbooks/erlang/tree/1446a056e43e0a2064cb2c25ee0cf5525205358d
include /etc/sudoers.d
Merge pull request #135 from phunehehe/sudoers

Sudoers
fix email extension
Merge pull request #136 from phunehehe/mail-extension

fix email extension
make session lifetime customizable