Add specs for FeedbackInputsController#most_feedback
extracting FeedbackInput#numerical_response count scopes
extracting FeedbackInputCounts presenter
adding spec for FeedbackInputsController#voice_messages
extracting FeedbackInput.voice_messages logic to model
use FeedbackInput.voice_messages in FeedbackInputsController
Merge pull request #154 from CristiScheye/feedback_inputs_controller_refactor

Feedback inputs controller refactor