Adding a setting to only redirect when a user is logged in

[webdevnerdstuff]

Next release I plan on adding a new setting for the user to choose if the extension should redirect when logged off or only when logged in.

I'm thinking of adding something like how the "On/Off" switch works in the Extension menu. I'm not sure what the option text would be just yet. Open to suggestions.

The default value I would have it set to always redirect as I think that's what most people prefer, especially if they have been using the extension for a long time. I don't want to just change their user experience without giving them the option to turn it on/off when implemented.

[webdevnerdstuff]

I just released version 2.2.0, which now has the ability to set an option to only redirect when logged in.

Pull Request: #82