[TASK] Switch to namespaces

[NamelessCoder]

Feel free to chip in! Add any number of commits here - when completed, I will squash it all together.

[cedricziel]

Okay @NamelessCoder, I think this works out now.

Can you point me to additional tasks I may have forgotten? I am not all in for squashing it together-looks pretty as it is :)

[xf-]

If somebody wants to replace old classname with namespaces.
-> Always have a backup available ;)
find ./ -type f -exec sed -i 's/=Tx_Vhs_ViewHelpers}/=FluidTYPO3\\Vhs\\ViewHelpers}/' {} \;