Add ability to edit forms and add new fields

This commit adds the ability to edit and modify existing forms.
On the technical side, it also adds a new reusable validation Facade which helps reduce duplicated code.

app/Facades/ContextAwareValidation.php

@@ -0,0 +1,14 @@
+<?php
+namespace App\Facades;
+
+use Illuminate\Support\Facades\Facade;
+
+class ContextAwareValidation extends Facade
+{
+
+   protected static function getFacadeAccessor()
+   {
+     return 'contextAwareValidator';
+   }
+
+}