+ Parameters for generate report from a invitacion model
+ Add gender for users model
+ Add invitador relationship to invitacion for know who is the responsable
+ Modify configuration for invoke an invitacion report
+ Description for a time with spanish notation
+ Methods for complete information and after generate a report
+ Upcase full name before save
+ Add invitacion relationship
+ Add invitacion id and a invitador select tag
+ Validates if invitacion signed and show print option
+ Source code for invitation report