Get rid of use_markdown.  Add share this publisher key setting.

We aren't' using markdown anymore.  We are using share this for shared markup.

Signed-off-by: Nathan Lowrie <nate@finelineautomation.com>
Show the entire archive in the sidebar

Getting rid of the archive page completely.

Signed-off-by: Nathan Lowrie <nate@finelineautomation.com>
Fixed the date time on posts.

Using standard strftime to format date.

Signed-off-by: Nathan Lowrie <nate@finelineautomation.com>