Do not use external website for highlightjs

BTCPayServer/BTCPayServer.csproj

@@ -111,6 +111,7 @@
 	<ItemGroup>
 	  <Folder Include="Build\" />
 	  <Folder Include="wwwroot\vendor\clipboard.js\" />
+	  <Folder Include="wwwroot\vendor\highlightjs\" />
 	</ItemGroup>
 
 	<ItemGroup>

BTCPayServer/Views/Apps/UpdatePointOfSale.cshtml

@@ -74,8 +74,8 @@
 </section>
 
 @section Scripts {
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/default.min.css">
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+    <link rel="stylesheet" href="~/vendor/highlightjs/default.min.css">
+    <script src="~/vendor/highlightjs/highlight.min.js"></script>
     <script>hljs.initHighlightingOnLoad();</script>
 }
 

BTCPayServer/wwwroot/vendor/highlightjs/default.min.css

@@ -0,0 +1 @@
+.hljs{display:block;overflow-x:auto;padding:0.5em;background:#F0F0F0}.hljs,.hljs-subst{color:#444}.hljs-comment{color:#888888}.hljs-keyword,.hljs-attribute,.hljs-selector-tag,.hljs-meta-keyword,.hljs-doctag,.hljs-name{font-weight:bold}.hljs-type,.hljs-string,.hljs-number,.hljs-selector-id,.hljs-selector-class,.hljs-quote,.hljs-template-tag,.hljs-deletion{color:#880000}.hljs-title,.hljs-section{color:#880000;font-weight:bold}.hljs-regexp,.hljs-symbol,.hljs-variable,.hljs-template-variable,.hljs-link,.hljs-selector-attr,.hljs-selector-pseudo{color:#BC6060}.hljs-literal{color:#78A960}.hljs-built_in,.hljs-bullet,.hljs-code,.hljs-addition{color:#397300}.hljs-meta{color:#1f7199}.hljs-meta-string{color:#4d99bf}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:bold}