[#60031832] extract and save attendance realted files
[#60031832] add abstract methods finished? ready? to ImportModule, implement them in contact
[#60031832] Set envoriment variables: attendance app_key and host
[#60031832] rename to environment_variables.yml and set Attendance::HOST in test
[#60031832] change @import to self.import
[#60031832] add TimeSlotImporter (Attendance Module) to KshemaImporter