"Sighting rank" on sightings

[Adam Winer]

Original [issue 40](https://code.google.com/p/scythebill-birdlist/issues/detail?id=40) created by adam_winer on 2012-06-19T04:50:48.000Z:

Feature request from a user

A popup menu called “Sighting Rank” and containing “Common” “Fairly Common” “Uncommon” “Rare” and “Accidental”

Perhaps just more entries in Status?