[TYPO3-mvc] Remove final from classes

[Steffen Kamper]

Hi Xavier,

Xavier Perseguers schrieb:
> Hi Steffen,
> 
>> yesterday i postet this RFC on corelist. i excluded Extbase as it's 
>> not synced. So please have look there for the arguments and take part, 
>> thx.
> 
> But... in fact it's synced now ;-)
> 

and not after one day again :) I would like to seperate, it can be done 
in Extbase before the release.

vg Steffen