[WIP] [ZF3] Refactor filter

As asked by @weierophinney on IRC, I should create the PR against develop.

So let's focus for now on Filter, this is the most advanced one and mostly done (just need to find a great way for some plugin manager), and some tests were already updated.

As a reminder, the Filter refactor is mostly:

* Code cleaning (now, all filters accept the same options array, which allow to configure a filter)
* Options are now underscore_separated
* Some filters were remade