PHP-modules, shell and vhcs-logo

[Cypherior]

Hello,

The information hunger never seems to stop. Some basic questions only.

What if I configure or install some modules to my apache/php, for example ruby on rails - Do I always need to configure or use some hack to get it to work also for my vhcs users?

Shell-question..
In the basic form, shell-accounts are not supported for vhcs-users, but I was wondering if it is possible to create a new unix-user for vhcsusername/www-data(group) and restrict that users access to his virtual/domain folder. If the user now edits or adds some files via ssh, can he still edit them(for example chmod) via ftp(i.e does he have the rights since the file was edited/created by the shell-user)?

Is is allowed to remove the vhcs-logo/information from the footer of the vhcs-panel? If I create a new template, do I have to add the vhcs-logo etc?