[TYPO3-english] dynamic content snippets

[Victor Livakovsky]

Hi, Mario.

I've built an extension long time ago, that uses hooks from 'tslib_fe' and 
substitutes markers in content like ###username###, ###email###, 
###first_name### and so on with currently logged in user data. It works for 
both cached and non-cached pages and substitutes markers with 
substituteMarkerArray method.