Press Resources updates

- Add fifth spokesperson and adjust responsive behavior accordingly.
- Increase margin under section headings.

Unrelated:
- Safe-ify post titles in related/popular lists.
Just to note, this isn't specific to your code. I've done similar things already by using a name space to modify blocks and modifiers. I'm willing to merge this as-is and move the conversation to an issue in Capital Framework if you think that's best. I think it's worth discussing though.

Also, on CSS Wizardry I actually did find instances of modifiers having elements: http://csswizardry.com/2013/01/mindbemding-getting-your-head-round-bem-syntax/. Not that this really means anything for us since there are so many implementations of BEM. I still think modifiers having elements is kind of weird and confusing.