different logo/title/slogan/main menu/secondary menu combination.
- Simplify triptych and footer-column css selectors.

- Remove fluid width implementation.
- Remove Featured region.
- Restore navigation region as zen implementation.

This reverts commit 1eeade7c.

- Bugfix page footer with large white spacing by enabling "overflow-y: hidden".
- Update default layout as fixed width.
- Update screenshots.

- Keep CiviCRM menu sticky on page top rather than flow.
- Bugfix unnecessary background color which break input button default style.

- Bugfix .item-list ul indent layout.

- Fully tested with Acid2 compatible browsers, e.g. Firefox 4, IE 9, Chrome 10, Safari 5 and Opera 11.
- Most likely function with legacy browsers, e.g. Firefox 2/3, IE 7/8, Chrome 8/9, Safari 3/4 and Opera 9/10.

- replace FamFamFam Silk icon set as spirit20-GPL icon set.
- reset coding style as like as STARTERKIT, simpler for compare.
- add support liquid/fluid/fixed layouts in theme-settings.php.
- completely revamp and simplify as custom design and implementation.