Add module to allow front-end logging to be sent to the backend for file logging.

[mvastarelli]

All logging on the back-end goes to STDOUT/File when the application while console.log() statements go to the browser output in the renderer. In production this console window won't be available to the user so we need to be able to capture important information for debugging purposes.

We should create a new logging module in the main process that is exposed to the renderer process via IPC that can forward messages to the logger.

This was first discussed in #232