code style: line breaks

code style: operator spacing

coding style: control flow whitespaces

codestyle adjustments: function declaration braces/spaces

codestyle adjustments: function argument spacing

remove calls to deprecated methods and classes

fix php errors

remove unnecessary "public"

sort plugins in plugin_list()

removed get_directory() method from PluginController

This method did absolutely nothing and just returned the plugin name.

moved plugin controller to Extension namespace

First go at moving the plugin classes into their own namespace

Merge branch 'master' into psr2

add event to check access to admin plugins

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 im

add event to check access to admin plugins

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.

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line lengths shortened

This makes sure all files use line lenghts shorter than 120 characters.

This is a quick fix. It might not always be the nicest change.

Change plugin functionality into a trait

This allows for using the functionality in class hierarchies that can
not inherit from DokuWiki_Plugin.

Provide a function to return admin plugin for the page request.

This was previously carried out in three separate places. Refactor
that code to use the new function.

Update tpl_pageTitle test to us

Provide a function to return admin plugin for the page request.

This was previously carried out in three separate places. Refactor
that code to use the new function.

Update tpl_pageTitle test to use a manager level admin plugin.

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more phpdocs and minor check

cleanup PHPDocs: DokuWiki_Syntax_Plugin is a DokuWiki_Plugin as well

phpdocs plugins util and controller

improve visibility and PHPdocs of plugin controller

Move plugin name regex to a constant as suggested by @glensc

Code cleanup documentation before merge

Function get_plugin_components() moved to extantion manager

added new plugins config cascade and added plugin.info.txt

don't load disabled plugins FS#1990

moved plugincontroller and event handler creation to init.php