Track subscriptions in metabase with AB test variant.

services/web/app/views/project/editor/history.jade

@@ -2,7 +2,7 @@ div#history(ng-show="ui.view == 'history'")
 	span(ng-controller="HistoryPremiumPopup")
 		.upgrade-prompt(ng-show="!project.features.versioning")
 			
-			div(sixpack-switch="teaser-track-changes")
+			div(sixpack-switch="teaser-history")
 				.message(
 					sixpack-default
 					ng-show="project.owner._id == user.id"
@@ -46,7 +46,7 @@ div#history(ng-show="ui.view == 'history'")
 				)
 					header.message-header
 						h3 History
-						
+
 					.message-body
 						h4.teaser-title See who changed what. Go back to previous versions.
 						img.teaser-img(

services/web/public/coffee/ide/pdf/controllers/PdfController.coffee

@@ -467,7 +467,17 @@ define [
 		$scope.startFreeTrial = (source) ->
 			ga?('send', 'event', 'subscription-funnel', 'compile-timeout', source)
 
-			event_tracking.sendMB "subscription-start-trial", { source }
+			switch source
+				when "dropbox"
+					sixpack.participate 'teaser-dropbox-text', ['default', 'dropbox-focused'], (variant) ->
+						event_tracking.sendMB "subscription-start-trial", { source, variant }
+
+				when "history"
+					sixpack.participate 'teaser-history', ['default', 'focused'], (variant) ->
+						event_tracking.sendMB "subscription-start-trial", { source, variant }
+
+				else
+					event_tracking.sendMB "subscription-start-trial", { source }
 
 			window.open("/user/subscription/new?planCode=student_free_trial_7_days")
 			$scope.startedFreeTrial = true