ErrorJSON is a utility function to send an error from Json to the requester.

GetEndpointByID returns a specific endpoint based on id.

GetEndpoints returns all endpoints in a json format.

GetTasks gets all tasks and sends it over HTTP.

GetTasksOfID gets tasks for the user and sends it over HTTP.

PostEndpoint inserts a new endpoint if valid.

PostTasks queues a new task to the list.