CSS and nav changes.
CSS changes for background image to cover rather than auto fill
nav changes detail POSts in Blog droop down

Signed-off-by: markfknight <mark@markfknight.com>
Added Data source.
Added data folder and data source for follow links and icons.
Adjusted footer and side_bar to pull links from the follow data file.

Signed-off-by: markfknight <mark@markfknight.com>