[TASK] Replace all calls to CMS functions with namespace equivalent

A simple shell script was used for all the replacements
https://gist.github.com/daKmoR/7490199
[TASK] Remove ext_autoload.php
[TASK] Raise maximum allowed TYPO3 version
Merge pull request #109 from FluidTYPO3/dev-namespaces

[TASK] Replace all calls to CMS functions with namespace equivalent