Title-less posts, excerpts, improved navigation, and bug fixes

Barring any showstoppers, this is planned to be the final pre-release before the theme is ready for production. It introduces features that will make this theme micro-blog friendly including title-less posts and excerpt truncation settings. It also improves the site's navigation and fixes some bugs missed in the previous two releases.

Any one interested in testing it can do so by following the instructions provided in the repository's README file.