customizeSlaveTrade.tw wants to use a span element it writes, but is being...

customizeSlaveTrade.tw wants to use a span element it writes, but is being executed in a <<silently>> block during NGP initialization, and <<silently>> no longer writes the span element to the DOM.  Replace <<silently>> with a hidden <div> so it executes just like it used to.

src/events/intro/introSummary.tw

@@ -102,7 +102,7 @@ Economic forecast:
 <<else>>
 	Current nationality distributions are [[Adjust the slave trade|Customize Slave Trade][$customWA = 0, $customVariety = 1]] | [[Stop customizing|Intro Summary][delete $customVariety]]
 	<<if ndef $nationalitiescheck>> /* NGP: regenerate $nationalitiescheck from previous game's $nationalities array */
-		<<silently>><<include "Customize Slave Trade">><</silently>>
+		<div id="SilentlyButWithStyle" style="display: none;"><<include "Customize Slave Trade">></div>
 	<</if>>
 	<br style="clear:both"><hr style="margin:0">
 	<<set _len = Object.keys($nationalitiescheck).length>>