Blockquotes do not perturbate the flow of the article when a card is next to it

This change avoids that kind of situation (massive space between a paragraph and a quote) while keeping the same design of quotes:

## Screengrab of the bug

![screen shot 2013-08-20 at 19 55 15](https://f.cloud.github.com/assets/85783/996270/864c3b0a-09cc-11e3-9366-7656985bfaaf.PNG)