Refined social networks listing in footer.

Removed Facebook (too personal) and GitHub (yawn)
Updated header to use description field from config
Modified pagination code to be better.
Added a new draft post about Ayrton Senna

Due for publication on 5/1/14.
Reduced the Cool Wall drafts to pure slugs.
Updated the comment markup for comment-enabled posts
Added a comment policy.
Added a couple of career drafts.
Added a draft about platform agnosticism.
Fixed screwy Coding Horror link in blogroll
Fixed code blocks.

Apparently a style sheet change caused code blocks to be badly fucked.
They're fixed now.
Updated link to cppds in "Linked Lists"
Updated draft review of "Technical Blogging"
Continued writing SVN post