for completeness (& defensive coding), test ['show'] against MSG_PUBLIC in case its redefined to a non-zero value

add capability to restrict recipients of dokuwiki 'msg' alerts.  This is useful where message is added to the queue before authentication is initialized

Fix page tools display with images disabled FS#2634

alternative fix for FS#2734

This fixes the image display in IE7 with the disadvantage that now in
IE7 with images disabled the text won't be displayed anymore.

This makes the pagetools in non-hover/static/active-mode use another
image replacement technique that falls back to the text when images are
disabled. Furthermore this fixes the :focused-display in IE7 by using
:active, too.

For some reason without position: relative the search button is hidden
in rtl languages.

The previous fix in e38f3066 fixed this
bug only in tb_formatln.

FS#2724.  fix 'are you sure' when using refresh after using tpl_actiondropdown

Fix double encoding in rss syntax FS#2731

unit tests for pageinfo()

Change function call from actionOk into actionOK (correct name)

This adds $INPUT in all places where it was still missing and available.
$INPUT is now also used in places where using $_REQUEST/... was okay in
order to make the code consistent.

This reverts parts of the changes from #154: Before merging the pull
request, a depth of 1 returned just the pages in the root namespace.
With the changes in the pull request, a depth of 1 also returned pages
in subnamespaces of the root namespace (as it was also tested in the test case).
This reverts this part of the changes and a depth of 1 returns just the
pages in the root namespace again.