Track share modal opening.

services/web/public/coffee/ide/share/controllers/ShareController.coffee

@@ -1,8 +1,10 @@
 define [
 	"base"
 ], (App) ->
-	App.controller "ShareController", ["$scope", "$modal", ($scope, $modal) ->
+	App.controller "ShareController", ["$scope", "$modal", "event_tracking", ($scope, $modal, event_tracking) ->
 		$scope.openShareProjectModal = () ->
+			event_tracking.send('share-modal-opened')
+
 			$modal.open(
 				templateUrl: "shareProjectModalTemplate"
 				controller:  "ShareProjectModalController"