- fix html HTML 4.01 validity- use export_vars instead of manual coded url parameter to increase security- improve usage of export_vars (no unecessary quotes, use "-base" parameter to make intentions clear)
- FormPage.edit: in the "view mode" of edit (as opposed to the "save mode"), add the ::xo::cc url as return_url in case no return_url was specified to ensure to return on the starting page (necessary for editing linked pages)
- provide path for calc_wiki_image_links_to_image_tags() in richtext::ckeditor and richtext::ckeditor2 to fix image replacement in cases, where a linked page is edited with embedded images.
- do not change resolve context per default on included pages. this is required, when the included page has included content stored underneath the object (e.g. .SELF./... references)
- fix HTML validation (4.01 Strict) for acs-admin/apm and acs-admin/developer (remove "center" tag, remove obsolete tags, remove some tables based designs)
