Merge pull request archivesspace#220 from archivesspace/midnight_fixes

Midnight fixes

Merge branch 'enumeration_controller_fix'

adding updates notes and relationship mix-in to eliminate slow queries

final touches for sprint 8

small tweaks to selenium, renaming a migration, and full path to jasper

Merge pull request archivesspace#202 from hudmol/agent-migrator-linking

When an agent or subject conflict occurs, return the URI of the conflicting record

Merge pull request archivesspace#197 from archivesspace/mysql-data-tr…

…uncation-error

make sure enumeration positions get updated