Skip directories with incomplete data

[jeffreydemieville]

Current behavior: If a measurement directory is missing data, the container returns an error of arrays with mismatched lengths.

The field scanner can create incomplete directories on the 3D scanner when a mechanical fault is experienced, and the scan is resumed from the last reentry point.
This data can be deleted manually on the cache server before archiving, but this is not efficient.

Impact: Season 16 data that is experiencing frequent faults is prone to not having sufficient full datasets to transform.

Recommended solution: if a directory is incomplete, record it in a separate list. When this measurement directory is due for E/W alignment, skip it. When this measurement is due for N/S alignment, skip it on both leading and tailing displays to avoid attempts to align non-consecutive measurements.