Completely reworked "footers" on site.

Moved the original footer content from the side bar to the main column, thus
making the height of the sidebar considerably less. Added a posting footer that
displays author picture and bio along with some share links.

Incorporated font-awesome to provide glyphs for the share icons and the RSS
subscribe icon.

Added normalize.css to provide a rational base for rest of CSS.

Added profile image for post footer.