anlys_id, subm_id, primeclass should not be float in shapefile

[fmaussion]

When glims data is downloaded as shapefile, the type of the anlys_id is float.

It should be int.

cc @bruceraup

[fmaussion]

Same for subm_id. Can we still change these to be ints?

[fmaussion]

Same for primeclass - should be int, not float

[fmaussion]

Trello: https://trello.com/c/k6QDOoGj

[bruceraup]

Note to self: "calculate_field_lengths" needs to be smarter.