adds array to extra schema

kicker-extras-schema-1.json

@@ -95,7 +95,7 @@
           "description": "The variable type (default is 'text')",
           "type": "string",
           "default": "text",
-          "enum": [ "text", "url", "boolean", "enum", "number"]
+          "enum": [ "text", "url", "boolean", "enum", "number", "array"]
         },
         "values": {
           "description": "The different variable values (for an 'enum' type only)",