URL formatting

[theresaanna]

This pull request:

• gives single committee and candidate pages a URL like "http://localhost/committee/id"
• moves single-links.js functionality (links in results tables to single entity pages) into tables.js
• moves id out of filters in the event context object and into a root-level property
• renames cmte_id and candidate_id to id
• makes all URLs absolute so that they resolve properly (note that many are absolute per the Node app's static asset handling. ex. /static/img -> /img)
• removes the Chosen binding from the single entity templates and puts it in single-entity.js
• adds a 'bind:singleEntity' event to init Chosen on single entity pages
• moves url updating from load:singleEntity -> render:singleEntity in the event that there are data loading issues (you'd never get to the single entity page if there are)
• moves the tablist.js module to the vendor dir