Switch to absolute date format

The present implementation of relative dates doesn’t auto-update, nor
does it work effectively in static renderings. Until that’s fixed, I
think it is better to switch to absolute dates.

core/ui/ViewTemplate/subtitle.tid

@@ -5,6 +5,6 @@ tags: $:/tags/ViewTemplate
 <div class="tc-subtitle">
 <$link to={{!!modifier}}>
 <$view field="modifier"/>
-</$link> <$view field="modified" format="relativedate"/>
+</$link> <$view field="modified" format="date" template={{$:/language/Tiddler/DateFormat}}/>
 </div>
 </$reveal>