Include missing module and remove call to older api
Fixed refactor error
Full path in permission error messages
Fixed Billing form validation
Update PacketFence_Administration_Guide.asciidoc
Should check for dir rather than exist
Added MySQL schema link for devel purposes
modified pre priorities
Rename pf::DB to pf::RoseDB
Update PacketFence_Administration_Guide.asciidoc

Extra information on the billing set up.
Added additional validation
Specify the package name perl-aliased
Added a default message
Update PacketFence_Administration_Guide.asciidoc

infos on billing configuration.
improved samba configuration
fix permission changed before starting service