Update PacketFence_Administration_Guide.asciidoc

whitelisted_categories "dépasse" dans la case suivante sur mon pdf généré de la 4.4
J'ai juste déplacé le Caution car il me semblais plus approprié que les users voit ça avant de commencer la config concernant le "billing"
Test if pfdhcplistener is enabled to run in the configuration
Added radius_request as param in getNodeInfoForAutoreg
Update PacketFence_Administration_Guide.asciidoc

edited, ready for merge
Merge pull request #259 from whitx/devel

Documentation review
Send $switch and not $switch->{_id} for getNodeInfoForAutoReg
Do not call request->param(username) in a list context
Remove debug being always on
Role for Catalyst::Request to override default behavior
Apply the captiveportal::Role::Request to Catalyst::Request
Use param_encoded instead of param
Use param_encoded instead of param
Encoded the destination_url before placing it in the stash
Use param_encoded instead of param
Use param_encoded instead of param
Refactor the destination_url handling
Use the refactored destination_url handling in Model::Portal::Session
Use param_encoded instead of param