#217 `project_promotion_table` table creation & migration
#217 `branch_promotion_table` table creation & migration
#217 Migrates the PROMOTED_RUN table
#217 Migrates the BUILD_CLEANUP_PROMOTION table
#217 Migrates the COMMENT table
#217 Migrates the EVENTS table
#217 Migrates the SUBSCRIPTION table
#217 Dropping the PROMOTION_LEVEL table at the end