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diff --git a/www/wiki/skins/chameleon/src/PermissionsHelper.php b/www/wiki/skins/chameleon/src/PermissionsHelper.php
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+<?php
+/**
+ * File containing the PermissionsHelper class
+ *
+ * This file is part of the MediaWiki skin Chameleon.
+ *
+ * @copyright 2013 - 2014, Stephan Gambke
+ * @license   GNU General Public License, version 3 (or any later version)
+ *
+ * The Chameleon skin is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * The Chameleon skin is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @file
+ * @ingroup   Skins
+ */
+
+namespace Skins\Chameleon;
+
+use DOMElement;
+
+/**
+ * PermissionsHelper class
+ *
+ * @author  Stephan Gambke
+ * @since   1.1
+ * @ingroup Skins
+ */
+class PermissionsHelper {
+
+	private $domElement;
+	private $skin;
+	private $default;
+
+	/**
+	 * @param \SkinChameleon $skin
+	 * @param DOMElement     $domElement
+	 * @param bool           $default
+	 */
+	public function __construct( \SkinChameleon $skin, DOMElement $domElement = null, $default = false ) {
+		$this->skin = $skin;
+		$this->domElement = $domElement;
+		$this->default = $default;
+	}
+
+	/**
+	 * @since 1.1
+	 *
+	 * @param string $attributeNameInDomElement
+	 *
+	 * @return bool
+	 */
+	public function userHasGroup( $attributeNameInDomElement ) {
+
+		return $this->userHas( 'group', $attributeNameInDomElement );
+	}
+
+	/**
+	 * @param string $attributeOfUser
+	 * @param string $attributeNameInDomElement
+	 *
+	 * @throws \MWException
+	 * @return bool
+	 */
+	protected function userHas( $attributeOfUser, $attributeNameInDomElement ) {
+
+		$user = $this->skin->getUser();
+		$attributeAccessors = array(
+			'group'      => array( $user, 'getEffectiveGroups' ),
+			'permission' => array( $user, 'getRights' ),
+		);
+
+		if ( !array_key_exists( $attributeOfUser, $attributeAccessors ) ) {
+			throw new \MWException( sprintf( 'Unknown permission: %s', $attributeOfUser ) );
+		}
+
+		if ( !$this->hasAttribute( $attributeNameInDomElement ) ) {
+			return $this->default;
+		}
+
+		$expectedValues = $this->getValueListFromAttribute( $attributeNameInDomElement );
+		$observedValues = call_user_func( $attributeAccessors[ $attributeOfUser ] );
+		$effectiveValues = array_intersect( $expectedValues, $observedValues );
+
+		return !empty( $effectiveValues );
+	}
+
+	/**
+	 * @since 1.1
+	 *
+	 * @param string $attributeNameInDomElement
+	 *
+	 * @return bool
+	 */
+	public function hasAttribute( $attributeNameInDomElement ) {
+		return $this->domElement !== null && $this->domElement->hasAttribute( $attributeNameInDomElement );
+	}
+
+	/**
+	 * @param string $attributeName
+	 *
+	 * @return string[]
+	 */
+	protected function getValueListFromAttribute( $attributeName ) {
+		return $this->domElement === null ? array() : array_map( 'trim', explode( ',', $this->domElement->getAttribute( $attributeName ) ) );
+
+	}
+
+	/**
+	 * @since 1.1
+	 *
+	 * @param string $attributeNameInDomElement
+	 *
+	 * @return bool
+	 */
+	public function userHasPermission( $attributeNameInDomElement ) {
+
+		return $this->userHas( 'permission', $attributeNameInDomElement );
+	}
+
+	/**
+	 * @since 1.1
+	 *
+	 * @param string $attributeNameInDomElement
+	 *
+	 * @return bool
+	 */
+	public function pageIsInNamespace( $attributeNameInDomElement ) {
+
+		if ( !$this->hasAttribute( $attributeNameInDomElement ) ) {
+			return $this->default;
+		}
+
+		$expectedNamespaces = array_map( array( $this, 'getNamespaceNumberFromDefinedConstantName' ), $this->getValueListFromAttribute( $attributeNameInDomElement ) );
+		$pageNamespace = $this->skin->getTitle()->getNamespace();
+
+		return in_array( $pageNamespace, $expectedNamespaces );
+	}
+
+	/**
+	 * @since 1.1
+	 *
+	 * AGREGADO PARA REEVO!
+	 *
+	 * @param string $attributeNameInDomElement
+	 *
+	 * @return bool
+	 */
+	public function pageHasCategory( $attributeNameInDomElement ) {
+
+		if ( !$this->hasAttribute( $attributeNameInDomElement ) ) {
+			return $this->default;
+		}
+
+		$expectedCategories = $this->getValueListFromAttribute( $attributeNameInDomElement );
+
+		$pagename = $this->skin->getTitle();
+		$cats = $this->skin->getSkin()->getCategoryLinks();
+		preg_match_all('/<\s*a[^>]*>(.*?)<\s*\/\s*a>/', $cats, $output_array);
+		$pageCategory = $output_array[1];
+		$match = array_intersect($pageCategory,$expectedCategories);
+		$final = reset($match);
+		if ($match) {
+			// error_log('Se encontro una categoria en la página '.$pagename.' que aplica una regla de Modification en Chamaleon');
+			$pageCategory = $final;
+		}
+
+		return in_array( $pageCategory, $expectedCategories );
+	}
+
+
+
+	/**
+	 * @param null|string $value
+	 *
+	 * @return int
+	 */
+	protected function getNamespaceNumberFromDefinedConstantName( $value ) {
+		$constants = get_defined_constants();
+		if ( !is_null( $value ) && array_key_exists( $value, $constants ) ) {
+			$value = $constants[ $value ];
+		}
+
+		return is_int( $value ) ? $value : -1;
+	}
+}