[#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
[#60031832] Fix: self to self.import, change belgrano_xxxx to xxxx
[#60031832] Add attendance importer
[#60031832] Fix doc mistake
[#60031832] Add trial lesson importer and fix misspeling (trail -> trial)
[#53801487]install byebug gem
[#53801487] new method to delegate all imports

ImportModule.delegate_ready_imports will query for
unfinished import_modules and, if ready, will delegate_import
to respective module.
[#53801487] avoid delegating more than once
[#53801487] delegate on the background

created rake task :delegate_ready_imports
running this periodically should work
[#60031832] remove buggy code

that aproach was not going to work
[#60031832] write specs for KshemaImporter
[#60031832] queue import of attendance and trials
[#60031832]fix specs
Merge 60031832-attendances to master

[Completes #60031832]
[#60697304]write specifications