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Further work on schedules v2
Switching to validator to generate correct JSON error message when user is too young to participate in study.
Merge pull request #378 from alxdarksage/age-limit

Switching to validator to generate correct JSON error message when user ...
Merge branch 'develop' of https://github.com/Sage-Bionetworks/BridgePF into schedule-v2
Stop writing consent signature to DynamoDB
API change to add study ID to the health code table
Merge pull request #379 from eric-wu/update

Stop writing consent signature to DynamoDB
Implement the study ID column
Remove logging
Add a new table for the new study ID column
Make the study ID field public
Remove version 2 of the table as it is not needed.
Remove the constructor that only takes the health code.
Remove the invalid import
Merge pull request #380 from eric-wu/develop

Add study id to the health code table
Schedules with multiple activities; cleaning up old schedule stuff
Fix Travis test failures
Remove Jasypt password
Add back the needed Travis env variable