config manager: removed dead/commented code

fixed saving in config plugin

Saving worked, but did you log out everytime. Now it is checked if the
auth mechanism was actually changed before assuming the login is
invalid.

partial revert of 23e8f02b8aa3a74fed70f1a496bdb5423908133a

okay. I can't read. we already had a multiline config. It's the default.
So I reverted my change, except for making use of formText/cleanTe

partial revert of 23e8f02b8aa3a74fed70f1a496bdb5423908133a

okay. I can't read. we already had a multiline config. It's the default.
So I reverted my change, except for making use of formText/cleanText for
proper line ending handling and I added made focused textareas a bit
larger.

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added 'text' to config plugin for multi line text configs

fixed authplain

* code/PHP5 cleanup

authpgsql fixes

* fixes merge messup (code was made up from parts of authad)
* code and PHP5 cleanup

authmysql fixes

* use proper plugin config
* code/PHP5 cleanup

fixes for authldap

* makes proper use of plugin config
* adds a few first defaults, but the whole config metadata is still
missing
* proper PHP5 use and comments

authad fixes

* fixes incorrect $this->adldap calls
* makes use of correct plugin config

merge old auth style configs with plugin config

moved adLDAP to authad plugin and fixed includes

some comment cleanup in authad

make all sub auth classes call the parent constructor

This does nothing currently but allows us adding certain things
to the base class later.

don't merge any global confs into auth plugin configs

removed old TarLib and changed plugin manager to use new one

Korean language update

Latvian language update

added cut off points for mobile devices as parameters to style.ini

Persian language update

Spanish language update

russian language update

Kazach language update

correctly check hash parameter in media dispatcher FS#2648

RTL and IE7 fixes for code blocks

beautified code blocks, also using lighter background colour (FS#2444)