Track v2 onboard events

Added events to the v2 banner to track on Metabase and Google
Analytics.

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

@@ -74,7 +74,7 @@ block content
 			
 			include ../translations/translation_message
 
-		.project-list-content
+		.project-list-content(event-tracking=settings.overleaf ? "loads_v2_dash" : "", onboard=settings.overleaf ? "true" : "", event-tracking-trigger=settings.overleaf ? "load" : "", event-tracking-mb="true", event-segmentation="{location: 'dash', v2_onboard: true}")
 			.row.project-list-row(ng-cloak)
 				.project-list-container(ng-if="projects.length > 0")
 					.project-list-sidebar-wrapper.col-md-2.col-xs-3

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

@@ -6,13 +6,13 @@ if (user.awareOfV2 && !settings.overleaf)
 					.col-xs-12
 						.alert.alert-info
 							.notification_inner
-								.notification_body
+								.notification_body(event-tracking="sees_v2_banner" event-tracking-mb="true" event-segmentation="{location: 'welcome', v2_onboard: true}" event-tracking-trigger="load" event-tracking-send-once="true")
-									a.btn.btn-info.btn-sm.pull-right(href="/user/login_to_ol_v2") Try Overleaf v2
+									a.btn.btn-info.btn-sm.pull-right(event-tracking="go_to_v2" event-tracking-mb="true" event-segmentation="{location: 'welcome', v2_onboard: true}" event-tracking-trigger="click" href="/user/login_to_ol_v2") Try Overleaf v2
-									| ShareLaTeX is joining Overleaf and will become <em>Overleaf v2</em> in late 2018 (<a href="https://www.overleaf.com/help/342-overleaf-v2-faq">read more</a>).
+									| ShareLaTeX is joining Overleaf and will become <em>Overleaf v2</em> in late 2018 (<a event-tracking="click_v2_read_more" event-tracking-mb="true" event-segmentation="{location: 'welcome', v2_onboard: true}" event-tracking-trigger="click" href="https://www.overleaf.com/help/342-overleaf-v2-faq">read more</a>).
 									<br/>
 									| We’re beta testing Overleaf v2 now and you can try it out with your ShareLaTeX account.
 								.notification_close
-									button(ng-click="dismiss()").close.pull-right
+									button(ng-click="dismiss()" event-tracking="closes_v2_banner" event-tracking-mb="true" event-segmentation="{location: 'welcome', v2_onboard: true}"  event-tracking-trigger="click").close.pull-right
 										span(aria-hidden="true") &times;
 										span.sr-only #{translate("close")}
 
@@ -49,4 +49,4 @@ span(ng-controller="NotificationsController").userNotifications
 							span().notification_close
 								button(ng-click="dismiss(notification)").close.pull-right
 									span(aria-hidden="true") &times;
-									span.sr-only #{translate("close")}
+									span.sr-only #{translate("close")}

services/web/public/coffee/directives/eventTracking.coffee

@@ -0,0 +1,41 @@
+# For sending event data to metabase and google analytics
+# ---
+# by default,
+#   event not sent to MB.
+#     for MB, add event-tracking-mb='true'
+#     by default, event sent to MB via sendMB
+#       this can be changed to use sendMBOnce via event-tracking-send-once='true' attribute
+#   event not sent to GA.
+#     for GA, add event-tracking-ga attribute, where the value is the GA category
+# event-tracking-trigger attribute is required to send event
+
+define [
+	'base'
+], (App) ->
+	App.directive 'eventTracking', ['event_tracking', (event_tracking) ->
+		return {
+			scope: {
+				eventTracking: '@',
+				eventSegmentation: '=?'
+			}
+			link: (scope, element, attrs) ->
+				sendGA = attrs.eventTrackingGa || false
+				sendMB = attrs.eventTrackingMb || false
+				sendMBFunction = if attrs.eventTrackingSendOnce then 'sendMBOnce' else 'sendMB'
+				segmentation = scope.eventSegmentation || {}
+
+				segmentation.page = window.location.pathname
+
+				sendEvent = () ->
+					if sendMB
+						event_tracking[sendMBFunction] scope.eventTracking, segmentation
+					if sendGA
+						event_tracking.send attrs.eventTrackingGa, attrs.eventTrackingAction || scope.eventTracking, attrs.eventTrackingLabel || ''
+
+				if attrs.eventTrackingTrigger == 'load'
+					sendEvent()
+				else if attrs.eventTrackingTrigger == 'click'
+					element.on 'click', (e) ->
+						sendEvent()
+		}
+	]

services/web/public/coffee/main.coffee

@@ -24,6 +24,7 @@ define [
 	"directives/stopPropagation"
 	"directives/focus"
 	"directives/equals"
+	"directives/eventTracking"
 	"directives/fineUpload"
 	"directives/onEnter"
 	"directives/selectAll"