Convert docdock theme from submodule to native files and fix Hugo compatibility

themes/docdock/static/revealjs/test/test-pdf.js

@@ -0,0 +1,15 @@
+
+Reveal.addEventListener( 'ready', function() {
+
+	// Only one test for now, we're mainly ensuring that there
+	// are no execution errors when running PDF mode
+
+	test( 'Reveal.isReady', function() {
+		strictEqual( Reveal.isReady(), true, 'returns true' );
+	});
+
+
+} );
+
+Reveal.initialize({ pdf: true });
+