LifePress version 0.3

- New shorter permalink urls. Changed from /items/views/:num/:slug to /posts/:num/:slug. Old urls will redirect automatically.
- Fix tag pages not showing all posts with that tag.
- More Accurately Calculate Which Tags Are Popular.
- Potential fix for tag page's pagination numbers being greater than items tagged.
- Update readme to include docs for plugins/themes.
- PHP 5.4+ compatibility fixes for objects being used before they were instantiated and the login being broken.