Use PG raw connection and binary file mode.
Use PG raw connection and binary file mode.

- Fixes weird issue with csv header encoding for the primary key
column.

dmlond/aact,SturdyCo/aact2,ctti-clinicaltrials/aact,ctti-clinicaltrials/aact,ctti-clinicaltrials/aact,SturdyCo/aact2,dmlond/aact,SturdyCo/aact2,1Maria/aact,SturdyCo/aact2,dmlond/aact,1Maria/aact,tibbs001/aact-1,tibbs001/aact-1,1Maria/aact,dmlond/aact,1Maria/aact,tibbs001/aact-1