If a key is not set, a PHP Notice is triggered. While these are
currently suppressed, this is still a code smell.

There was a bug that the empty string was considered to be invalid if
also a max or min value was defined for a config field of type
numericopt.

also dokuwiki and php are on https

While DokuWiki suppresses PHP Notices they are still a code smell and
should be fixed. This fixes some PHP Notices that occurred.

Some of these fixes could be refactored into nicer code once we move to
PHP 7 and get access to the `??` operator.

This makes sure the provided extension ID is a valid id before
initializing it in the extension manager.

No need to check those seperately. The correct order should be ensured
already.

Added green and red text color styles for geshi. Improves look of highlighted code for language diff. Fixes #900.

This also removes duplicated code from ajax.php

The internal lang and localized variables of a plugin are no longer
accessible from the outside. This adds a proper setter and also fixes
the type hinting in the config plugin.

this fixes another problem with our tests and phpunit 6.1

This should fix some tests on PHP 7.1. The work is far from done, we
still have a lot of variables without proper accessibility defined.

* Updated remote.php

Updated remote.php for retrieving all the acl details.

* Updated remote.php

By mistake changed in addAcl instead of listAcls.