initial "cosmetic" update

Delete old & unused code (select language) in Controller\Userguide,
delete  language messages, delete guide/de-de, add Google translate.
Delete old & unused JS, upd
Update JQuery & JShighlight.
Update Markdown library + fix Kodoc classes.
View: add security line, fix classnames in PSR-0, delete bugs
Code optimization,  add settings to config, fix typo

init: added check cache, rewrited markdown autoloader:
replaced class with static method to closure.

Userguide: optimized the methods: _modules(), action_*,
add method config() for easy access to config 'userguide',
moved styles & scripts in config,
added Google translate, updated Disqus.

Views: fix typos, optimized code.