[wip] iquod flagging script

[bkatiemills]

This PR will contain a script to add a column to AutoQC's sql database that indicate per-level IQuOD QC flags for the profiles analyzed. This script is meant to run as a standalone post-processing step, similar to summarize_results.py.

[bkatiemills]

To be resolved before merge:

• @s-good, I assume "CS XBT surf. temp." referred to in the paper corresponds to the QC testCSIRO_depth; let me know if this is wrong.
• Speaking of CSIRO_depth, including this saddles many profiles in quota_subset with flag 3 for every level, since we're propagating XBT flags downwards. Is this really what we want, or in this case is just the surface measurement bad?
• Todo: still need to actually write the result back to the database
• Todo: need a better validation sample to make sure I'm getting what we expect. @BoyerWOD if you have or can generate some wodascii with correct IQuOD flags we can test against, that would be helpful.

[s-good]

Sorry for the delay in replying to this.

• Yes, CS XBT surf. temp. is CSIRO_depth.
• CSIRO_depth should not be propogated downwards. The same is true for ICDC_aqc_01_level_order.