Some new features to the Campaigns functionality in Smashboard.
New Features
Added option to export messages to CSV
Improvements
Replaced action buttons with popup menu
Winner Selection
Reworked winners selection to pull message from elasticsearch
Hidden previous winners title when there is no previous winner
Bug Fixes
Fixed the broken css for winner's selection modal
Positioned the title of the previous winner below the unconfirmed winner
Fixed the incorrect engagements count for each campaign
