Align hyperlink text on Tools page

The hyperlink text for "Civic Hacking Icons" on the Tools page is not aligned with the rest of the page.

This pull request aligns the text with the other links on the page. It also makes the image above it clickable so the user can see it up close if they click on it.

Screenshots below.

Before:
![brigade_before](https://f.cloud.github.com/assets/1596394/704238/65050fda-ddbc-11e2-918d-4ed2c5abd4c3.png)

After: 
![brigade_after](https://f.cloud.github.com/assets/1596394/704243/7e40a252-ddbc-11e2-87d5-86350fbe82fc.png)