Fixes Bug 847939: Raw crash in pg

to forestall the perpetual cycle of adding columns to the reports table everytime a new field is added to the raw crash, this change allows postgres to save the whole raw crash json.  

in order to use this feature, either the crashmovers will have to be configured to save the raw crash to both PG and HB, or the Processor will have to be configured to save the raw crash.

Nota Bene: the binary minidump itself is not to be stored in PG, just the raw crash json.