Removing use of lambda syntax in script blocks emitted by AureliaEnhanceTagHelper - fixes issue in IE11.

Author: deap82

src/FooBar.Web/TagHelpers/AureliaEnhanceTagHelper.cs

@@ -52,8 +52,8 @@ public override void Process(TagHelperContext context, TagHelperOutput output)
 				}
 				output.PostElement.AppendHtml($@"
                 <script>
-                    SystemJS.import('app/core/aurelia-enhancer').then(enhancer => {{
-						SystemJS.import('{Module}').then(module => {{
+                    SystemJS.import('app/core/aurelia-enhancer').then(function(enhancer) {{
+						SystemJS.import('{Module}').then(function(module) {{
 							var data = {jsonData};
 							var clientModel = module.create(data);
 							enhancer.enhance(clientModel, document.getElementById('{elementId}'));
@@ -65,7 +65,7 @@ public override void Process(TagHelperContext context, TagHelperOutput output)
 			{
 				output.PostElement.AppendHtml($@"
                 <script>
-                    SystemJS.import('app/core/aurelia-enhancer').then(enhancer => {{
+                    SystemJS.import('app/core/aurelia-enhancer').then(function(enhancer) {{
 						enhancer.enhance({{}}, document.getElementById('{elementId}'));
                     }});
                 </script>");