reveal.js template fixes.

Put quotes around `controlsLayout`, `controlsBackArrows`,
and `display`, since these require strings.

Add `showSlideNumber`, `hashOneBasedIndex`, `pause`.

data/templates/default.revealjs

@@ -93,12 +93,12 @@ $if(controlsTutorial)$
 $endif$
 $if(controlsLayout)$
         // Determines where controls appear, "edges" or "bottom-right"
-        controlsLayout: $controlsLayout$,
+        controlsLayout: '$controlsLayout$',
 $endif$
 $if(controlsBackArrows)$
         // Visibility rule for backwards navigation arrows; "faded", "hidden"
         // or "visible"
-        controlsBackArrows: $controlsBackArrows$,
+        controlsBackArrows: '$controlsBackArrows$',
 $endif$
 $if(progress)$
         // Display a presentation progress bar
@@ -108,17 +108,21 @@ $if(slideNumber)$
         // Display the page number of the current slide
         slideNumber: $slideNumber$,
 $endif$
+$if(showSlideNumber)$
+        // 'all', 'print', or 'speaker'
+        showSlideNumber: '$showSlideNumber$',
+$endif$
 $if(hash)$
         // Add the current slide number to the URL hash so that reloading the
         // page/copying the URL will return you to the same slide
         hash: $hash$,
 $endif$
-        // Push each slide change to the browser history
-$if(history)$
-        history: $history$,
-$else$
-        history: true,
+$if(hashOneBasedIndex)$
+        // Start with 1 for the hash rather than 0
+        hashOneBasedIndex: $hashOneBasedIndex$,
 $endif$
+        // Push each slide change to the browser history
+        history: $if(history)$$history$$else$true$endif$,
 $if(keyboard)$
         // Enable keyboard shortcuts for navigation
         keyboard: $keyboard$,
@@ -170,6 +174,10 @@ $if(help)$
         // key is pressed
         help: $help$,
 $endif$
+$if(pause)$
+       // Flags if it should be possible to pause the presentation (blackout)
+       pause: $pause$,
+$endif$
 $if(showNotes)$
         // Flags if speaker notes should be visible to all viewers
         showNotes: $showNotes$,
@@ -317,7 +325,7 @@ $if(zoomKey)$
 $endif$
 $if(display)$
         // The display mode that will be used to show slides
-        display: $display$,
+        display: '$display$',
 $endif$
 $if(mathjax)$
         math: {