Adding an "overview' section to the page

Added a prominent download link to the new section and a single
sentence descriptor of the tool.

Changed the caption for the first screenshot since that wording is now
called out in the overview description
Reducing the spacing above and below articles, except for the first one
Using the common download url instead of the custom one

Hadn’t realized that there was a urls.json file. Just updated the
download link in it and used it in the new prominent download button.
Tweaking the branding area

Added an owasp logo and tweaked the appearance of the text and images
in that area
Tweaking the caption of the first screenshot
Cropping the larger screenshots so that they all match in size
Moving and tweaking things around in the features area

Making sure that the last feature in a column has a thumbnail image.
Tweaking the spacing in feature-blocks
Changing the "More Links" to "Visit Us" and adding an AVI link to that column.
Changes to the header and footer

Making the header slightly transparent when affixed and removing the
bottom grey border.

Tweaking the hover color for links in the header and footer.

Removing the Acknowledgement header in the footer.
Adding a meta tag so IE stops defaulting to IE7 mode for intranets
Trimming at tweaking the wording of the "Why Code Pulse" section
Rewording the "how does it work" section for clarity
Adding explicit focus modifiers for links in the header and footer to keep FF and IE from making the links look weird when clicked
Ordering the navigation menu to match the page layout / changing the header of the "how it works" section