Issue directus#886 (directus#899)

* Test cases : AUthentication - Auth, Forgot Password, Collections - Create, Delete

* Issue#885 - Done

* Issue#886 - Done

* directus#886 Reverted unwanted code

src/core/Directus/Database/TableGateway/BaseTableGateway.php

@@ -695,7 +695,7 @@ protected function addVirtualColumn($tableName, $columnData)
     public function castFloatIfNumeric(&$value, $key)
     {
         if ($key != 'table_name') {
-            $value = is_numeric($value) ? (float)$value : $value;
+            $value = is_numeric($value) && preg_match('/^-?(?:\d+|\d*\.\d+)$/',$value) ? (float)$value : $value;
         }
     }