new finally reliable way to detect if /index.php is called directly

new finally reliable way to detect if /index.php is called directly
  and if to include lib/main.php
new global AllActionPages
SetupWiki now loads all mandatory pages: HOME_PAGE, action pages, and warns if not.
WikiTranslation what=buttons for Carsten to create the missing MacOSX buttons
PageGroupTestOne => subpages
renamed PhpWikiRss to PhpWikiRecentChanges
more docs, default configs, ...

git-svn-id: svn://svn.code.sf.net/p/phpwiki/code/trunk@3418 96ab9672-09ca-45d6-a79d-3d69d39ca109