Update sfm.css

Moving css from <head>
tweaks to fix display issues (libsite bootswatch implementation)
Update base.html

moved <head> styling to stylesheet (and changed element from body to article)
fixed extra " in line 39
removed hide-lo class from 29 (site tweak since there's no benefit to having it)
Update sfm.css

Fix to break-point issue in article padding
Merge pull request #58 from StudioZut/master

Changes to base.html template and sfm.css to address diplay issues