get page titles from page-titles.coffee for both client- and server-side renders; set window.document.title where appropriate
add tests for page titles
use window.document.title instead of setDocumentTitle()
check the page title is updated when a dataset is renamed
Merge pull request #468 from scraperwiki/20131204-page-titles

Show page titles (window.document.title) server- and client-side
merge in page title changes from master