Added file_id to all tables and subjob to delete data from deleted files
Order by observation_date when creating line geometry for _map layer
Removed tPosgresqlcommit for null connection in delete_data_for_deleted_files subjob
Updated Liquibase changeset so that tables don't have to be truncated
Merge pull request #5 from AODN-ETL/delete_data_from_deleted_files_order_by_time_when_creating_line_geometry

Added file_id to all tables, deleted data from deleted files, ordered by time when creating line geometry