Update form class and edit access table array

Form class has new check part for alpha numeric with spaces called
"alphanumericspace".

edit access table array gets update for making color no longer mandatory
(almost never used).
And adds alpha numeric with spaces and unique check for the name.

www/admin/table_arrays/array_edit_access.inc

@@ -10,7 +10,8 @@
 				"value" => $GLOBALS["name"],
 				"output_name" => $this->l->__("Access Group Name"),
 				"mandatory" => 1,
-				"type" => "text"
+				"type" => "text",
+				"error_check" => "alphanumericspace|unique"
 			),
 			"description" => array (
 				"value" => $GLOBALS["description"],
@@ -20,7 +21,7 @@
 			"color" => array (
 				"value" => $GLOBALS["color"],
 				"output_name" => $this->l->__("Color"),
-				"mandatory" => 1,
+				"mandatory" => 0,
 				"type" => "text",
 				"size" => 6,
 				"length" => 6,
@@ -28,7 +29,6 @@
 				"error_regex" => "/[\dA-Fa-f]{6}/",
 				"error_example" => "F6A544"
 			)
-
 		),
 		"table_name" => "edit_access",
 		"load_query" => "SELECT edit_access_id, name FROM edit_access ORDER BY name",