Treat empty strings as no session
Remove unnecessary line
Merge branch 'master' into fix-empty-session

* master:
  Add new CLI command 'checkpoint identity generate_app_key' for creating app-specific god keys.
Fix conditional and use blank to check for empty session
Merge pull request #70 from bengler/fix-empty-session

Fix empty session
Fix "undefined local variable or method `http'".
Fix failing tests that arbitrarily relied on sort order.
Fix /accounts/:provider/:uid, return 404 if no current identity instead of throwing nil exception.
Updated Gemfile + .lock
Upgraded to pebblebed 0.2.1
Gemfile: upgraded Unicorn.
Merge pull request #71 from bengler/upgrade2014

Upgrade2014
Update pebbles-cors
Fix an insecure regexp.
Upgrade to ActiveRecord 4.0 and sinatra-activerecord 1.4, which can replace the database tasks in bengler_test_helper. This also means using schema.rb instead of development_structure.sql.
Use #destroy_all in a couple of places.
Adapt to how rails-observers gem actually reports changes to all classes, and ignores the observed class list.
Refactor how ActiveRecord is configured.