showing representatives alphabetically grouped and able to add and change twitter id
added index and show files
added error message. Closes #381
small change to update_attributes
added tests and corrected class inheritance
Use AppConfig, not Rails.env, to toggle analytics.
Update rspec-rails, pry, selenium-webdriver
Update draper to 1.0.0.
Fix the build.
Remove old search + minor fixes for Hanna.
Added page title method to application helper
Update home/people (from Daniel).
Missed a few additions.
Add photo of Hanna + update bio.
added page titles. Closes #385
Add new contributor.
Remove dead code.
Reduce duplication in Hdo::Search::Searcher.
Update devise.

Since we're using PostgreSQL, we're not affected by the recent
security issue, but let's stay up to date anyway.
Remove some redundant requires.