[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] Switch to namespaces
[TASK] Simplify hook subscribers
[TASK] Avoid injection method in abstract VH test base
[BUGFIX] Missing global namespace prefix for a few t3lib remnants
Merge pull request #359 from NamelessCoder/dev-namespaces

[TASK] Switch to namespaces