Scaffold some identity stuff and switch to postgres

PresentPortal.ApiService/Pages/Shared/_LoginPartial.cshtml

@@ -0,0 +1,28 @@
+@using Microsoft.AspNetCore.Identity
+@using PresentPortal.ApiService.Areas.Identity.Data
+
+@inject SignInManager<ApplicationUser> SignInManager
+@inject UserManager<ApplicationUser> UserManager
+
+<ul class="navbar-nav">
+@if (SignInManager.IsSignedIn(User))
+{
+    <li class="nav-item">
+        <a id="manage" class="nav-link text-dark" asp-area="Identity" asp-page="/Account/Manage/Index" title="Manage">Hello @UserManager.GetUserName(User)!</a>
+    </li>
+    <li class="nav-item">
+        <form id="logoutForm" class="form-inline" asp-area="Identity" asp-page="/Account/Logout" asp-route-returnUrl="@Url.Action("Index", "Home", new { area = "" })">
+            <button id="logout" type="submit" class="nav-link btn btn-link text-dark border-0">Logout</button>
+        </form>
+    </li>
+}
+else
+{
+    <li class="nav-item">
+        <a class="nav-link text-dark" id="register" asp-area="Identity" asp-page="/Account/Register">Register</a>
+    </li>
+    <li class="nav-item">
+        <a class="nav-link text-dark" id="login" asp-area="Identity" asp-page="/Account/Login">Login</a>
+    </li>
+}
+</ul>