In standalone template, generate a launchSettings.json that doesn't have

IISExpress. Fixes #235

src/Microsoft.AspNetCore.Blazor.Templates/Microsoft.AspNetCore.Blazor.Templates.nuspec

@@ -19,7 +19,7 @@
   <files>
     <file
       src="content/**/*"
-      exclude="**/launchSettings.json;**/node_modules/**;**/bin/**;**/obj/**;**/*.user;**/.vs/**;**/.vscode/**;content/Directory.Build.*"
+      exclude="content/BlazorHosted.CSharp.Client/Properties/launchSettings.json;content/BlazorHosted.CSharp.Server/Properties/launchSettings.json;**/node_modules/**;**/bin/**;**/obj/**;**/*.user;**/.vs/**;**/.vscode/**;content/Directory.Build.*"
       target="Content" />
   </files>
 </package>

src/Microsoft.AspNetCore.Blazor.Templates/content/BlazorStandalone.CSharp/.template.config/template.json

@@ -43,6 +43,24 @@
       "type": "bind",
       "binding": "HostIdentifier"
     },
+    "HttpPort": {
+      "type": "parameter",
+      "datatype": "integer",
+      "description": "Port number to use for the HTTP endpoint in launchSettings.json."
+    },
+    "HttpPortGenerated": {
+      "type": "generated",
+      "generator": "port"
+    },
+    "HttpPortReplacer": {
+      "type": "generated",
+      "generator": "coalesce",
+      "parameters": {
+        "sourceVariableName": "HttpPort",
+        "fallbackVariableName": "HttpPortGenerated"
+      },
+      "replaces": "61501"
+    },
     "skipRestore": {
       "type": "parameter",
       "datatype": "bool",

src/Microsoft.AspNetCore.Blazor.Templates/content/BlazorStandalone.CSharp/.template.config/vs-2017.3.host.json

@@ -15,5 +15,11 @@
   "learnMoreLink": "https://github.com/aspnet/blazor",
   "uiFilters": [
     "oneaspnet"
+  ],
+  "ports": [
+    {
+      "name": "HttpPort",
+      "useHttps": false
+    }
   ]
 }

src/Microsoft.AspNetCore.Blazor.Templates/content/BlazorStandalone.CSharp/Properties/launchSettings.json

@@ -0,0 +1,12 @@
+{
+  "profiles": {
+    "BlazorStandalone.CSharp": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      },
+      "applicationUrl": "http://localhost:61501/"
+    }
+  }
+}