Preprocess Washington data

[ghing]

Though the pre-2007 results (see #144) and the county-level are in CSV format with fairly consistent structure, there are a number of results, especially at the precinct-level that require conversion.

This is a lower priority than writing the loader for the county and statewide CSV results (#149).

In particular:

election	raw_url	notes
wa-2007-11-06-general	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2007/General/Data/Documents/Precinct%20Results/Pacific Gen07 Reg Voters.pdf
wa-2008-08-19-primary	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2008/2008PrimaryPrecinctData/Documents/Snohomish prec results with RV, cast.pdf
wa-2008-02-19-primary	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2008/2008PP/2008PPPrecinctData/Documents/Clallam PP08 canvass with RV.pdf
wa-2008-02-19-primary	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2008/2008PP/2008PPPrecinctData/Documents/Klickitat prec with RV, cast.pdf	Need to decide which 2008-02-19 Klickitat County result file is the best one to use or if they need to be merged.
wa-2008-02-19-primary	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2008/2008PP/2008PPPrecinctData/Documents/Klickitat RV, cast.pdf	Need to decide which 2008-02-19 Klickitat County result file is the best one to use or if they need to be merged.
wa-2008-02-19-primary	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2008/2008PP/2008PPPrecinctData/Documents/Lincoln RV, canvass.pdf
wa-2008-02-19-primary	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2008/2008PP/2008PPPrecinctData/Documents/Pacific RV, canvass.pdf
wa-2008-02-19-primary	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2008/2008PP/2008PPPrecinctData/Documents/Pierce prec with RV, cast.pdf
wa-2008-02-19-primary	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2008/2008PP/2008PPPrecinctData/Documents/San Juan prec with RV, cast.pdf
wa-2008-02-19-primary	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2008/2008PP/2008PPPrecinctData/Documents/Snohomish prec with RV, cast.pdf
wa-2008-02-19-primary	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2008/2008PP/2008PPPrecinctData/Documents/Walla Walla PP08 prec with cast.pdf
wa-2008-02-19-primary	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2008/2008PP/2008PPPrecinctData/Documents/King prec with RV, cast (access db).zip	Results are in Access (.mdb) format
wa-2008-11-04-general	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2008/2008GeneralData/Documents/2008Gen%20by-precinct%20data%20(by%20county).zip
A couple of counties have precinct results in Access (.mdb) format
wa-2010-11-02-general	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2010/general/documents/results/2010gencong-stateraces.pdf
wa-2010-11-02-general	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2010/general/documents/results/2010genleg-stateraces(fixed).pdf
wa-2011-11-08-general	https://wei.sos.wa.gov/agency/osos/en/press_and_research/previouselections/documents/report.is.being.prepared.pdf
wa-2011-11-08-general	https://wei.sos.wa.gov/agency/osos/en/press_and_research/PreviousElections/2011/general/Data/Documents/FINAL%202011Gen%20-%20Leg.pdf