Zf3 evm

[bakura10]

Hi,

This is a preliminary stuff for a clean-up EVM for ZF3.

In this PR, I did :

• A lot of reordering of methods so that they match interfaces, as well as follow the more common pattern in ZF2 of setter then getter (it makes the code easier to read I think when you discover a class).
• Remove lot of classes that "seems" not used like the Filter ones, as well as the StaticEventManager. I'm not sure about this one, as I'm pretty sure the framework itself use it internally at some point, so I may need to reintroduce it later.
• A lot of PHPDoc fixing (some interfaces stated to return void while the implementation returned something).
• A lot of methods were doing a lot of different things, hence making it hard to taking advantage of some PHP 5.4 features like Callable typehint. For instance, "attach" were both handling attaching calalble and ListenerAggregateInterface, while there was a specific attachAggregate method. So now attach only attache a single callback while attachAggregate allow to attach an aggregate.