New fxn to check and report problems from a fws_occ run

[adamdsmith]

We've taken great pains to catch errors during the fws_occ run. Let's create a fxn to check or review a fws_occ run and report to the user which properties had issues.

fwspp_combine will fail reasonably (but vaguely) when trying to combine fwspp objects with captured errors, but fwspp_review (and specifically xlsx_review) does not...