check for opcache function before using it

Moved settings to their own namespace

replaced ptln() with echo

We used to use ptln to ensure the produced HTML source code is somewhat
readable, but with modern HTML inspectors this is no longer necessary
and makes the PHP source code

replaced ptln() with echo

We used to use ptln to ensure the produced HTML source code is somewhat
readable, but with modern HTML inspectors this is no longer necessary
and makes the PHP source code ugly.

show more ...

translation update

translation update

translation update

translation update

corectly disable sniff for one file

translation update

fixed the minimal tests we have

PSR2 adjustments for admin class

first go over the settings classes for PSR-2

introduce getType for Settings

moved language loading to the loader

adjusted basic loading saving in admin

stripped out all the session stuff

added Writer class for saving the config back to file

moved the whole settings class mechanism to it's own class

created a configuration Loader class

This replaces stuff in the Configuration class that hasn't been removed,
yet.

moved php parser to it's own file

start of refactoring the config plugin

split up all the files and added namespaces. everything broken

deleted deprecated auth plugins

authmysql and authpgsql were replaced by authpdo two releases ago.

PSR-2 for revert plugin

PSR-2 for usermanager plugin

PSR-2 for authldap plugin

PSR-2 for ACL plugin