Tweak post styles; correct spacing, add commas as tag list separator.
Set "masonry" to use `brickbox` class, add heading to that `<section>`.
Add pagination markup.
Initial styles for pagination navigation elements.
Merge branch 'master' into tumblr

Conflicts:
	web/index.html
Apply CSS changes from `master` merge to embedded style sheet.
Integrate pagination HTML with Tumblr template tags.
Fix bug where current page info obscured "Previous" and "Next" links.
Generalize main Tumblr content with `id` attribute, link to fragment.
Merge branch 'master' into tumblr

Conflicts:
	web/index.html
Apply CSS changes from `master` branch.