TryGhost/Ghost — pull request #2025 by ErisDS (2014-01-24 22:15:23+00:00)
Title: Start up safely when the activeTheme is not present

fixes #2000

- resolves errors when attempting to start Ghost without the active theme present
- the frontend will render a 500 error page safely
- issues with themes that have an error template are resolved separately in #2018