CORE-5665 Added endpoint for deleting a user tag
Added tags endpoints to index
CORE-5797 Added avus table user ID conversions.
CORE-5797 Refactored find-existing-metadata-template-avu.

Refactored an avu->where-clause function out of the donkey.persistence.metadata/find-existing-metadata-template-avu function.
CORE-5797 Updated template avu endpoints.

Updated the donkey.persistence.metadata functions for template AVUs to set and update the created_by and modified_by columns instead of the owner_id column.
Updated the Metadata Template AVU CRUD endpoints to no longer use the owner_id field, to no longer return the "user" field in JSON responses, and to check for write permissions for the create, update, and delete endpoints.
Bumped the version to 3.1.9.
CORE-5772: bumped the compatible database version
CORE-5772: added support for jobs containing multiple steps on different systems to the database
CORE-5772: replaced the job_step.id field with a step number field
CORE-5771: added some additional columns to the jobs table
CORE-5783: created a migration to add some details to the jobs table
CORE-5783: changed the name of the job-migrator uberjar file
CORE-5772: migrated the job submission services to the new job table structure
CORE-5772: removed the code to remove deleted jobs before producing a job listing