[#8376279]Mailchimp integration - get lists
[#8376279]store mailchimp-local list equivalence
[#8376279]ignore .swo files
[#8376279]add foreman
[#8376279] clean files to refactor mailchimp integration into 1 model
[#8376279]setup mailchimp integration in a model
[#8376279]simple sync
[#8376279]sync rake task
[#8376279] link to remove mailchimp integration
[#8376279] begging error handling
[#8376279]avoid creating mailchimpintegration with wrong apikey
[#8376279]avoid pagination for now
[#8376279]check student and former_student lists
[#8376279]colorize check
Merge 8376279-mailchimp to master

[Completes #8376279]