.pickBestEcosite() consideration of record_when_last_updated

[natearoe]

In the absence of Correlation Date being populated in the Site > Site Ecological Site History table, the .pickBestEcosite() function would benefit from considering the record_when_last_updated field to determine the best ecosite.

[brownag]

Thanks for pointing this out Nate. All NA correlation date (for example) seems to lead to instability in sort order depending on data source (e.g. NASIS v.s. SQLite). I've added a correction to use recwlupdated in lieu of ecositecorrdate.

There are several other instances where this kind of non-deterministic sorting sneaks into child tables: taxmoistscl, landform, landscape. You also mentioned transect ID. I will leave this issue open until I have a chance to investigate and resolve the other related issues.