Fixes (#435)

* Add flight level field to PIREP field closes #401

* Default value for distance 0 closes #400

* Block airline deletion if assets exist #367

* Formatting

* Move some of the base exception classes

* Fix skin references to use settings table

* Set default for theme name if setting is wrong

app/Exceptions/Converters/ValidationException.php

@@ -2,11 +2,10 @@
 
 namespace App\Exceptions\Converters;
 
-use App\Exceptions\HttpException;
-use Illuminate\Support\Facades\Log;
+use App\Exceptions\AbstractHttpException;
 use Illuminate\Validation\ValidationException as IlluminateValidationException;
 
-class ValidationException extends HttpException
+class ValidationException extends AbstractHttpException
 {
     private $validationException;
     private $errorDetail;