Improved 404 page and updated tests for empty search

@@ -107,7 +107,7 @@ class ActivityService
     }
 
     /**
-     * Filters out similar acitivity.
+     * Filters out similar activity.
      * @param Activity[] $activity
      * @return array
      */

@@ -43,14 +43,14 @@
                     <div class="float right">
                         <div class="links text-center">
                             <a href="/books"><i class="zmdi zmdi-book"></i>Books</a>
-                            @if($currentUser->can('settings-update'))
+                            @if(isset($currentUser) && $currentUser->can('settings-update'))
                                 <a href="/settings"><i class="zmdi zmdi-settings"></i>Settings</a>
                             @endif
-                            @if(!$signedIn)
+                            @if(!isset($signedIn) || !$signedIn)
                                 <a href="/login"><i class="zmdi zmdi-sign-in"></i>Sign In</a>
                             @endif
                         </div>
-                        @if($signedIn)
+                        @if(isset($signedIn) && $signedIn)
                             <div class="dropdown-container" dropdown>
                                 <span class="user-name" dropdown-toggle>
                                     <img class="avatar" src="{{$currentUser->getAvatar(30)}}" alt="{{ $currentUser->name }}">

@@ -4,8 +4,9 @@
 
 
 <div class="container">
-    <h1>Page Not Found</h1>
-    <p>The page you were looking for could not be found.</p>
+    <h1 class="text-muted">Page Not Found</h1>
+    <p>Sorry, The page you were looking for could not be found.</p>
+    <a href="/" class="button">Return To Home</a>
 </div>
 
 @stop
\ No newline at end of file

@@ -180,6 +180,14 @@ class EntityTest extends TestCase
             ->seeStatusCode(200);
     }
 
+    public function testEmptySearchRedirectsBack()
+    {
+        $this->asAdmin()
+            ->visit('/')
+            ->visit('/search/all')
+            ->seePageIs('/');
+    }
+
 
     public function testEntitiesViewableAfterCreatorDeletion()
     {