Adding Razor Pages Version (#60)

* In progress copying code into new RP project
Cleaning up namespaces and whitespace in original Web project

* Cleaning up some more namespaces

* Removing unused page.

* Index page loads correctly.

* Fixing up paging.

* Moving views; getting ready to convert to RPs

* Auto stash before merge of "master" and "origin/master"

Basket and Checkout pages wired up

* WIP on Account pages

* Working on signin/signout

* Working on auth

* Getting order history working
Fixing auth bug

* Fixing Checkout issue

* Fixing link

src/WebRazorPages/Pages/_ValidationScriptsPartial.cshtml

@@ -0,0 +1,18 @@
+<environment include="Development">
+    <script src="~/lib/jquery-validation/dist/jquery.validate.js"></script>
+    <script src="~/lib/jquery-validation-unobtrusive/jquery.validate.unobtrusive.js"></script>
+</environment>
+<environment exclude="Development">
+    <script src="https://ajax.aspnetcdn.com/ajax/jquery.validate/1.14.0/jquery.validate.min.js"
+            asp-fallback-src="~/lib/jquery-validation/dist/jquery.validate.min.js"
+            asp-fallback-test="window.jQuery && window.jQuery.validator"
+            crossorigin="anonymous"
+            integrity="sha384-Fnqn3nxp3506LP/7Y3j/25BlWeA3PXTyT1l78LjECcPaKCV12TsZP7yyMxOe/G/k">
+    </script>
+    <script src="https://ajax.aspnetcdn.com/ajax/jquery.validation.unobtrusive/3.2.6/jquery.validate.unobtrusive.min.js"
+            asp-fallback-src="~/lib/jquery-validation-unobtrusive/jquery.validate.unobtrusive.min.js"
+            asp-fallback-test="window.jQuery && window.jQuery.validator && window.jQuery.validator.unobtrusive"
+            crossorigin="anonymous"
+            integrity="sha384-JrXK+k53HACyavUKOsL+NkmSesD2P+73eDMrbTtTk0h4RmOF8hF8apPlkp26JlyH">
+    </script>
+</environment>