Some first Setting class tests

proper defaults for initialize

There isn't really unset variables, but we do expect null to be passed
for some of them.

This also moves the update method further up as it's logically the next
step.

extract save checking into own method

Instead of having the out() method return empty strings, a new method
tells the writer if a setting should be saved or not. Only then the
out() method is called.

sucess is green

basic test for the Writer class

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.

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translation update

translation update

translation update

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

fixed broken tests

I also introduced an auto loaded namespace for the tests.

visibility declarations in plugins