Fixes to "step navigation", etc

public_html/css/hpr.css: Commented out the 'font-size: 75%;' in the CSS
    definition for '#maincontent footer p'. It was this that shrank the
    lower "step navigation" list in comparison to the upper one. The
    upper is in a '<header>' block and the lower in a '<footer>' block.

templates/content-episode.tpl.html: Fixed a typo.

templates/content-theme.tpl.html: Changed "This can be added" to "This
    is automatically added"

templates/queries-episode-sqlite.tpl.html: Fixed a transcription error
    from the 'mysql' version

templates/shared-utils.tpl.html: Modified the layout of the
    'step_navigation' macro to remove tabs which are being copied to the
    HTML. Just a minor cosmetic issue. Added a Vim modeline to the file
    to help with this.

templates/queries-episode-sqlite.tpl.html

@@ -21,7 +21,7 @@
 			FROM eps
 			INNER JOIN episode_date
 				ON eps.date > episode_date.date
-			WHERE eps.date < date(\'now\')
+			WHERE eps.date <= date(\'now\')
 		),
 		comment_tallies AS (	
 			SELECT