ZF3 support

zf3 support (#241)

* Update Renderer.php

* Update PrepareData.php

* - unittests update, removed deprecated method `getMock` (#238)

- also removed deprecated method setExpectedException
- run cs fix
- update composer for cs-fix

* - run cs fix
- update composer doctrine
- datagrid should now work with zf2 and zf3

* added unit tests for nightly