common control parameters details need documentation

[jensens]

great blog about it: http://blog.redturtle.it/2012/07/03/boxing-plone

• ajax_load=1 is documented in current docs: http://docs.plone.org/develop/addons/javascript/ajax.html?highlight=ajax_load#id4
• ajax_include_head=1 - missing: we have some great hidden useful feature see
• disable_border=1 -> empties toolbar in P5 (except personal-tools)
• disable_PORTLETMANAGERNAME=1 (see blog post above)