send projectHistoryId with resync requests

services/web/app/coffee/Features/DocumentUpdater/DocumentUpdaterHandler.coffee

@@ -121,11 +121,11 @@ module.exports = DocumentUpdaterHandler =
 			method: "DELETE"
 		}, project_id, "delete-thread", callback
 
-	resyncProjectHistory: (project_id, docs, files, callback) ->
+	resyncProjectHistory: (project_id, projectHistoryId, docs, files, callback) ->
 		logger.info {project_id, docs, files}, "resyncing project history in doc updater"
 		DocumentUpdaterHandler._makeRequest {
 			path: "/project/#{project_id}/history/resync"
-			json: { docs, files }
+			json: { docs, files, projectHistoryId }
 			method: "POST"
 		}, project_id, "resync-project-history", callback
 

services/web/app/coffee/Features/Project/ProjectEntityUpdateHandler.coffee

@@ -394,7 +394,8 @@ module.exports = ProjectEntityUpdateHandler = self =
 		ProjectGetter.getProject project_id, rootFolder: true, overleaf: true, (error, project) ->
 			return callback(error) if error?
 
-			if !project?.overleaf?.history?.id?
+			projectHistoryId = project?.overleaf?.history?.id
+			if !projectHistoryId?
 				error = new Errors.ProjectHistoryDisabledError("project history not enabled for #{project_id}")
 				return callback(error)
 
@@ -410,7 +411,8 @@ module.exports = ProjectEntityUpdateHandler = self =
 					path: file.path
 					url: FileStoreHandler._buildUrl(project_id, file.file._id)
 
-				DocumentUpdaterHandler.resyncProjectHistory project_id, docs, files, callback
+				DocumentUpdaterHandler.resyncProjectHistory project_id, projectHistoryId, docs, files, callback
+
 	_cleanUpEntity: (project, entity, entityType, path, userId, callback = (error) ->) ->
 		if(entityType.indexOf("file") != -1)
 			self._cleanUpFile project, entity, path, userId, callback