Add Location#has_voice_messages? and #has_numerical_responses?
Use Location#has_numerical_responses? in LocationController
Add NotificationSubscription.confirmed/.with_new_answers/#newest_ansewrs
Associate Answer with NotificationSubscription
Refactor Notifier
adding rails email preview gem and removing letter opener gem
Refactor NotificationSubscription#confirmation_sent?
Rename weekly_activity2 mailer to weekly_activity
Rename Notifier to SubscriberNotifier
Extract Subscriber from NotificationSubscription
Fix flaky SubscriptionConfirmer#confirm spec
Bump gemfile
Merge pull request #168 from codeforamerica/refactor-messages

Refactor messages
Rename NotificationSubscription to LocationSubscription
Split NotificationSubscriptionsController into restful controllers
Write test for SubscriptionController
Add specs for subscribing and unsubscribing to locations
Merge pull request #169 from codeforamerica/refactor-notifier

Refactor NotificationSubscription
Split AnswersController into VoiceAnswersController and Numerical AnswersController