Refactored db/seeds

Seeds has been refactored to be be more rubylike. Also made a small
semantic fix to the legislator model to have many bills.
Fixed references by having references be singular

Was having issues in where relations weren't working since the FK
columns would be in plural ex (bills_id) instead of singular (bill_id).
Old columns removed and new relations set up with correct semantic.
Bill Model Rspec test added

Test checks to ensure that method finds the titles on a bill that has
all titles set.
First view created to view Bills.

Routing set to default to bill view. Simple View of bill just showing
its bill id and short title