Update tricky database character tests

[vteague]

The raire-service tricky character tests (https://github.com/DemocracyDevelopers/raire-service/blob/main/src/test/java/au/org/democracydevelopers/raireservice/service/GetAssertionsServiceCsvTests.java) assume that quotes are escaped by doubling them, but it looks like colorado-rla actually escapes them with a backslash.

Check the assumed-storage-format against the actual storage format; get rid of the TODO.