[#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]Merge 53801487-queue-imports to 60031832-attendances

[Completes #53801487]