Add margin-bottom: 20px to .show-full-content-first-post h1.entry-title
Customizer: New Layout and Typography selector

	- Added new Customizer option called Layout and Typography to select a scheme in css/*.css
	- Moved font styles from style.css to separate CSS files in css/xxx-scheme.css
	- Added Serif Font Scheme with 700px Content Width (default scheme)
	- Added Sans-Serif Font Scheme with 700px Content Width
	- Added Sans-Serif Font Scheme with 550px Content Width