Refactored notification showing and global view data

app/Http/Middleware/GlobalViewData.php

@@ -0,0 +1,28 @@
+<?php namespace BookStack\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+
+/**
+ * Class GlobalViewData
+ * Sets up data that is accessible to any view rendered by the web routes.
+ */
+class GlobalViewData
+{
+
+    /**
+     * Handle an incoming request.
+     *
+     * @param Request $request
+     * @param Closure $next
+     * @return mixed
+     */
+    public function handle(Request $request, Closure $next)
+    {
+        view()->share('signedIn', auth()->check());
+        view()->share('currentUser', user());
+
+        return $next($request);
+    }
+
+}