Removed a few duplicated assignments, and added the 2015 session slug for the North Dakota vote scraper
Resolved counting of errant lines as additional voters
ND: finished adding comments to votes module
ND: simplified vote parser logic and removed redundant assignments
ND: Transformed the vote scraper logic from -if-continue- to -if-elif-elif-
ND: fixed vote parsing, which was not functioning after the refactor
ND: Tweaked the vote scraper transition between motion and vote to clean up the output