Use existing records to sort species

[Adam Winer]

Original [issue 4](https://code.google.com/p/scythebill-birdlist/issues/detail?id=4) created by adam_winer on 2010-11-05T00:48:42.000Z:

Existing records for a location are a valuable hint for what species are usually present, as well as what groups/subspecies are likely. Use this info.

[Adam Winer]

Comment [#1](https://code.google.com/p/scythebill-birdlist/issues/detail?id=4#c1) originally posted by adam_winer on 2010-11-05T20:19:04.000Z:

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[Adam Winer]

Comment [#2](https://code.google.com/p/scythebill-birdlist/issues/detail?id=4#c2) originally posted by adam_winer on 2011-01-20T16:38:02.000Z:

Now (0.8) using location information to drive species choice. I'll file a separate enhancement to use it to pick ssp./groups (which is a trickier issue)