Fix Laravel 5.5 compatibility issues - view helpers, collections, and auth routes

- Replace {{ url() }} with {{ url('/') }} in all blade templates to fix object-to-string conversion errors
- Update TeamStoreModel::selectTeamStoreGroupByCartKey() to use first() instead of get() for Laravel 5.5 Collections
- Fix TeamStoreController to access object properties directly instead of using array syntax [0]
- Update authentication routes to use Laravel 5.5 method names (showLoginForm, login, logout)
- Update login/register links from /auth/login to /login throughout views (navbar, app, auth pages)
- Verify cart, login, and register pages working with HTTP 200 status

app/Providers/RouteServiceProvider.php

@@ -1,44 +1,69 @@
-<?php namespace App\Providers;
+<?php
 
-use Illuminate\Routing\Router;
+namespace App\Providers;
+
+use Illuminate\Support\Facades\Route;
 use Illuminate\Foundation\Support\Providers\RouteServiceProvider as ServiceProvider;
 
-class RouteServiceProvider extends ServiceProvider {
+class RouteServiceProvider extends ServiceProvider
+{
+    /**
+     * This namespace is applied to your controller routes.
+     *
+     * In addition, it is set as the URL generator's root namespace.
+     *
+     * @var string
+     */
+    protected $namespace = 'App\Http\Controllers';
 
-	/**
-	 * This namespace is applied to the controller routes in your routes file.
-	 *
-	 * In addition, it is set as the URL generator's root namespace.
-	 *
-	 * @var string
-	 */
-	protected $namespace = 'App\Http\Controllers';
+    /**
+     * Define your route model bindings, pattern filters, etc.
+     *
+     * @return void
+     */
+    public function boot()
+    {
+        parent::boot();
+    }
 
-	/**
-	 * Define your route model bindings, pattern filters, etc.
-	 *
-	 * @param  \Illuminate\Routing\Router  $router
-	 * @return void
-	 */
-	public function boot(Router $router)
-	{
-		parent::boot($router);
+    /**
+     * Define the routes for the application.
+     *
+     * @return void
+     */
+    public function map()
+    {
+        $this->mapApiRoutes();
 
-		//
-	}
+        $this->mapWebRoutes();
+    }
 
-	/**
-	 * Define the routes for the application.
-	 *
-	 * @param  \Illuminate\Routing\Router  $router
-	 * @return void
-	 */
-	public function map(Router $router)
-	{
-		$router->group(['namespace' => $this->namespace], function($router)
-		{
-			require app_path('Http/routes.php');
-		});
-	}
+    /**
+     * Define the "web" routes for the application.
+     *
+     * These routes all receive session state, CSRF protection, etc.
+     *
+     * @return void
+     */
+    protected function mapWebRoutes()
+    {
+        Route::middleware('web')
+             ->namespace($this->namespace)
+             ->group(base_path('routes/web.php'));
+    }
 
+    /**
+     * Define the "api" routes for the application.
+     *
+     * These routes are typically stateless.
+     *
+     * @return void
+     */
+    protected function mapApiRoutes()
+    {
+        Route::prefix('api')
+             ->middleware('api')
+             ->namespace($this->namespace)
+             ->group(base_path('routes/api.php'));
+    }
 }