Stop generating static content when we're saving an encrypted wiki

core/templates/static.content.tid

@@ -1,7 +1,12 @@
 title: $:/core/templates/static.content
 type: text/vnd.tiddlywiki
 
+<$reveal type="nomatch" state="$:/isEncrypted" text="yes">
 <!-- For Google, and people without JavaScript-->
 <$list filter="[!is[system]sort[title]]" >
 <$view field="title" format="text"></$view>
 </$list>
+</$reveal>
+<$reveal type="match" state="$:/isEncrypted" text="yes">
+This file contains an encrypted ~TiddlyWiki. Enable ~JavaScript and enter the decryption password when prompted.
+</$reveal>