Merge pull request #5 from rchekaluk/master

DRY by consolidating some constants into the Metadatum::State model
Fix typo
Adjust person attributes for federal legislator
Pull in votesmart_id from congress api
Switch to federal legislators falling under state metadatum
Refactor views for federal overview (WIP) & people
Fix show view for federal legislator
Fix case where legacy person has nil _type
Take out redundant scope, fix relevant one
Take out unnecessary set up & change 'us'
Add & use AWS_HOST_STUB

Useful for federal legislator photo lookup.
Add avatar image to federal legislators
Add handling of feds for lower and upper overview
Change title of overview for federal legislators