Change `docLabelsUpdated` socket event to `broadcastDocLabels`

services/web/app/coffee/Features/Labels/LabelsController.coffee

@@ -20,7 +20,7 @@ module.exports = LabelsController =
 			if err?
 				logger.err {project_id, doc_id, err}, "[LabelsController] error getting labels from doc"
 				return next(err)
-			EditorRealTimeController.emitToRoom project_id, 'docLabelsUpdated', {
+			EditorRealTimeController.emitToRoom project_id, 'broadcastDocLabels', {
 				docId: doc_id, labels: docLabels
 			}
 			res.json {projectId: project_id, docId: doc_id, labels: docLabels}

services/web/public/coffee/ide.coffee

@@ -128,7 +128,8 @@ define [
 		ide.binaryFilesManager = new BinaryFilesManager(ide, $scope)
 
 		# Set up labels
-		$scope.$on 'doc:labels:updated', labels.onDocLabelsUpdated
+		ide.socket.on 'broadcastDocLabels', (data) ->
+			labels.onBroadcastDocLabels(data)
 		$scope.$on 'entity:deleted', labels.onEntityDeleted
 		$scope.$on 'file:upload:complete', labels.fileUploadComplete
 		$timeout () ->
@@ -179,7 +180,4 @@ define [
 		# User can append ?ft=somefeature to url to activate a feature toggle
 		ide.featureToggle = location?.search?.match(/^\?ft=(\w+)$/)?[1]
 
-		ide.socket.on 'docLabelsUpdated', (data) ->
-			$scope.$broadcast 'doc:labels:updated', data
-
 	angular.bootstrap(document.body, ["SharelatexApp"])

services/web/public/coffee/services/labels.coffee

@@ -10,7 +10,7 @@ define [
 			state: state
 		}
 
-		labels.onDocLabelsUpdated = (e, data) ->
+		labels.onBroadcastDocLabels = (data) ->
 			if data.docId and data.labels
 				state.documents[data.docId] = data.labels
 

services/web/test/UnitTests/coffee/Labels/LabelsControllerTests.coffee

@@ -92,7 +92,7 @@ describe 'LabelsController', ->
 			@EditorRealTimeController.emitToRoom.callCount.should.equal 1
 			lastCall = @EditorRealTimeController.emitToRoom.lastCall
 			expect(lastCall.args[0]).to.equal @projectId
-			expect(lastCall.args[1]).to.equal 'docLabelsUpdated'
+			expect(lastCall.args[1]).to.equal 'broadcastDocLabels'
 			expect(lastCall.args[2]).to.have.all.keys ['docId', 'labels']
 
 		describe 'when LabelsHandler.getLabelsForDoc produces an error', ->