deleted migration to add attachment_name
emails_controller added
modified people and email index page
email index page modified
corrected email index page
corrected email index page2
corrected email index page3
corrected email index page4
corrected email index page5
corrected email index page6
email index page modification
created User model and controller
IncomingMailController checks if User email exists
added cards model and controller, as well as associations from card to email and user
IncomingMailController creates card if the user email address exists
explicitly assigning user_id and email_id to card
merge conflict incoming_mails_controller and schema resolved