Add more regions

Issue Summary

I'm using this theme as a starting point to create a custom theme for a small SEO page because it's so simple.
In my case no sidebar navigation for guest is needed, even though I have added the left sidebar region because it's useful for the admin back-end navigation. But for people new to drupal it might be confusing that the navigation disappears after enabling the theme.

I suggest to add more regions to theme, at least the left sidebar region.