Since we want to check the access to the Admin plugins on an individual
basis, we need to grant access to all logged in users at first. This
means a user could access the admin page, but would not see any plugins
available.

This adds a new method that capsulates the access check that has to be
done to decide if an admin plugin's page should be shown to the user.
The default implementation is the same as before, relying only on the
forAdminOnly() method and the users' isadmin or ismanager status.

Admin plugins themselves can override the method to do additional
checks. In this patch, I added that to the usermanager plugin which will
only return true if the current auth backend can list users.

However the real idea behind this change is that the new method emits a
new event called ADMINPLUGIN_ACCESS_CHECK which would allow plugins to
overwrite it. This way it could be possible to give certain user groups
access to certain admin plugins without giving them admin or manager
permissions.

Note: this does not change how the "Admin" link is shown, it still
depends on ismanager or isadmin. A plugin as mentioned above would need
to influence the display via the MENU_ITEMS_ASSEMBLY event.

Note: this only covers the basic access check. Admin plugins may need
further adjustments for access to other parts of the plugin (like AJAX
components). An additional commit will update this for the bundled
plugins.

This syntax can be used by IDEA and other IDEs to mark the constants as
deprecated in the editor.

This undoes the change in alignments. Those are useful when displaying
text only emails in a monospace font.

As discussed in https://github.com/splitbrain/dokuwiki/pull/2462#issuecomment-413786942

The newlines serve the goal of keeping textlengths reasonably short in
text only mails.

This change was done by reverting the files back to the current master.

As discussed in https://github.com/splitbrain/dokuwiki/pull/2462#issuecomment-413786942

This applies a lot of formatting fixes on the language files:

1. In EOF - trimmed all empty lines except one
2. After the title - one empty line strictly
3. Corrected links to national versions of documents in dokuwiki.org if
   they exits - 4example [[doku>namespaces]] to [[doku>ar:namespaces]]
4. Corrected some over-auto-translated links to "playground:playground"
   and "wiki:syntax"
5. Torn lines are collected in one in a large number of places (except
   for RTL languages)
6. Removed e-mail signatures that now is missing in the English set of
   files

When a remote resource exceeds the fetchsize but the remote server does
not return a Content-Length, we read only the fetchsize amount of bytes
but failed to detect that this was a partial read, thus a partial
resource got cached.

This fix will read fetchsize+1, which will then be correctly determined
as too big and thrown away.

While refactoring into inc/Action/Locked, the fall-through call
to html_edit was missed.
See 952acff9

This removed the edit box from the locked page, which is needed
for users to get the page source or by etherpad lite plugin.

This change re-adds the call to html_edit for the locked action.

Signed-off-by: Michael Braun <michael-dev@fami-braun.de>

from http://mike.teczno.com/JSON/JSON.phps

This fixes a problem on PHP 7.2. However ultimately this class should be
dropped in favor of the native json_decode/json_encode functions.

This should fix a warning in PHP 7.3