Removed old migration that breaks db:migrate
*** WIP: Pseudo-coding the signed requests solution
*** Added ApiToken model
*** WIP: Create access token
*** WIP: Added custom authentication error to handle token mismatches
*** A bit of spec cleanup
*** WIP: Added initial test
*** WIP: Added test for #approval_response
*** A bit of cleanup
*** Create token for sending out to approvers
*** Added used_at to api_tokens
*** Added token requirements for requests
*** WIP use me when you resume