Fixed blueprint field validation: Allow numeric inputs in text fields

CHANGELOG.md

@@ -15,6 +15,7 @@
     * Fixed bug in `ContentBlock` serialization
     * Fixed `Route::withQueryParam()` to accept array values
     * Fixed typo in truncate function [#1943](https://github.com/getgrav/grav/issues/1943)
+    * Fixed blueprint field validation: Allow numeric inputs in text fields
     
 # v1.4.4
 ## 05/11/2018

system/src/Grav/Common/Data/Validation.php

@@ -128,10 +128,12 @@ class Validation
      */
     public static function typeText($value, array $params, array $field)
     {
-        if (!is_string($value)) {
+        if (!is_string($value) && !is_numeric($value)) {
             return false;
         }
 
+        $value = (string)$value;
+
         if (isset($params['min']) && strlen($value) < $params['min']) {
             return false;
         }