track read more clicks in announcements

services/web/app/views/project/list.pug

@@ -50,6 +50,7 @@ block content
 								p.announcement-date {{ announcement.date | date:"longDate" }}
 								a.announcement-link(
 									ng-href="{{ announcement.url }}"
+									ng-click="logAnnouncementClick()",
 									target="_blank"
 								) Read more
 						div.text-center(

services/web/public/coffee/main/announcements.coffee

@@ -15,6 +15,9 @@ define [
 		markAnnouncementsAsRead = ->
 			event_tracking.sendMB "announcement-alert-dismissed", { blogPostId: $scope.announcements[0].id }
 
+		$scope.announcementClicked = ->
+			event_tracking.sendMB "announcement-read-more-clicked", { blogPostId: $scope.announcements[0].id }
+
 		refreshAnnouncements()
 
 		$scope.toggleAnnouncementsUI = ->