Adds support for Zend Hydrator Filters in the DoctrineObject Hydrator.

Zend Hydrators normally support filters [1] to modify the results returned.
This patch adds checks for filters on a property name basis back into
the hydrator.

A sample filter is also included, which implements simple whitelisting
and blacklisting of property names.

Tests are included applying this filter during extract by reference and
extract by value.

* [1] http://zf2.readthedocs.org/en/latest/modules/zend.stdlib.hydrator.filter.html
fix to add datetimetz to the type conversion
Merge pull request #335 from freemanirl/fix-hydrate-datetimetz

fix to add datetimetz to the type conversion
Replaced deprecated method

addValidator() of ZF2 ValidatorChain is deprecated, attach() should be used.
Merge pull request #338 from av3/patch-1

Replaced deprecated method
fixes failing test-cases
Merge pull request #343 from UFOMelkor/test-fixes

fixes failing test-cases
remove unused extends BaseTestCase
at ServiceManagerTestCase
Merge pull request #344 from samsonasik/rem.unused.use.extends

remove unused extends BaseTestCase
Merge pull request #302 from elyobo/obey-filters-in-hydration

Adds support for Zend Hydrator Filters in the DoctrineObject Hydrator.
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'origin/form-multiple-values-bug'