Fix args check func, don't show register link if disabled under login

app/Http/Controllers/Controller.php

@@ -2,7 +2,6 @@
 namespace App\Http\Controllers;
 
 use Laravel\Lumen\Routing\Controller as BaseController;
-
 use Illuminate\Http\Request;
 use App\Http\Controllers\Controller;
 
@@ -29,14 +28,13 @@ class Controller extends BaseController {
     }
 
     protected static function checkRequiredArgs($required_args=[]) {
-        array_push($required_args, NULL);
+        foreach($required_args as $arg) {
+            if ($arg == NULL) {
+                return false;
+            }
+        }
+        return true;
 
-        if (count(array_unique($required_args)) < count($required_args)) {
-            return false;
-        }
-        else {
-            return true;
-        }
     }
 
     protected static function ensureAdmin() {

resources/views/login.blade.php

@@ -14,9 +14,12 @@
             <input type="password" placeholder="password" name="password" class="form-control login-field" />
             <input type="hidden" name='_token' value='{{csrf_token()}}' />
             <input type="submit" value="Login" class="login-submit btn btn-success" />
-            <p class='signup-prompt'>
-                <small>Don't have an account? <a href='{{route('signup')}}'>Register</a></small>
-            </p>
+
+            @if (env('POLR_ALLOW_ACCT_CREATION') == true)
+                <p class='signup-prompt'>
+                    <small>Don't have an account? <a href='{{route('signup')}}'>Register</a></small>
+                </p>
+            @endif    
         </form>
     </div>
     <div class="col-md-3"></div>