RF-11103: Prevented control skinning resources from being added to the view when the "plain" skin is used
Revert "RF-11103: Prevented control skinning resources from being added to the view when the "plain" skin is used"

This reverts commit cc7a785011c138fda161033bf5b611d07aa66d54.
RF-11103: Implemented an integration test for richfaces skinning
RF-12952: Replaced ajax-props.xml usage with the AjaxProps interface
RF-12952: Replaced AjaxOutput-props.xml usage with the AjaxOutputProps interface
RF-12952: Replaced base-props.xml usage with the BaseProps interface
RF-12952: Changed the default value of the rendered attibute in BaseProps
RF-12952: Replaced bypass-props.xml usage with the BypassProps interface
RF-12952: Created the ColumnProps interface to replace the unused column-props.xml
RF-12952: Replaced command-button-props.xml usage with the CommandButtonProps interface
RF-12952: Replaced core-props.xml usage with the CoreProps interface
RF-12952: Replaced events-mouse-props.xml, events-key-props.xml and i18n-props.xml usage with corresponding interfaces
RF-12952: Replaced events-popup-props.xml, events-row-props.xml usage with corresponding interfaces
RF-12952: Replaced focus-props.xml usage with the corresponding interface
RF-12952: Replaced events-popups-before-props.xml usage with the corresponding interface
RF-12952: Replaced immediate-prop.xml usage with the corresponding interface
RF-12952: Replaced input-props.xml usage with the corresponding interface
RF-12952: Removed the defaultBehaviour property from the CommandButtonProps click attribute
RF-12952: Introduced the DisabledProps interface
RF-12952: Replaced link-props.xml and commandLink-prop.xml usage with the corresponding interfaces