Add 'item.redirect_ssl' option in 'nginx' role

This key, applied to nginx server configuration, will allow you to
define redirection on HTTPS site in addition to the one you can
currently set with 'item.redirect' for HTTP site.
Update 'item.name' key handling in 'nginx' role

This patch should improve behaviour of 'nginx' role when 'item.name' key
for a site is not defined. 'nginx' role will also not add
"default_server" string to a site which has explicitly set
'default: False' in its configuration.
Modify autogenerated comments in 'nginx' role
Install cron in LXC containers by default
Merge pull request #120 from drybjed/bugfixes

Small bugfixes in 'nginx' and 'lxc' roles