Theme engine

[rgooler]

Need a basic theming engine for the app. Thinking folders like this:

themes/
  default/
    theme.css
    README.md
    index.html
    settings.html
    providers/
      steam/
        login.html
        get_api_key.html
        display.html

Where themes/default/index.html would have logic for, say, rotating what screens were displayed, themes/default/providers/steam/display.html would display steam stats post login, etc.

[rgooler]

Might need this later:

const userDataPath = (electron.app || electron.remote.app).getPath('userData');
// this.path = path.join(userDataPath, 'user_preferences.json');
config.setBaseDir(userDataPath)