Really truly clear config cache on discard fixtures

We found that config fixtures are still retained in memory between tests. This fixed that.

Strict compliance with EE 1.14.01 and CE 1.9.0.1

#179: Enabling group annotation on data provider

fixes #204 getModelInstance() object to string

Add `replace` statement to composer.json

Load shared class fixtures before methods

Fixture array merge

Fix strict notice

Conflicts:
	shell/ecomdev-phpunit.php

test case for config values from multiple files - expected behaviour would be that the most specific one prevails

test case for array_merged config values -> creates array -> Exception "Warning: It is not yet possible to assign complex types to properties"

FIXES Exception : Strict Notice: Declaration of EcomDev_PHPUnit_Constraint_Layout_Block_Property::getActualValue() should be compatible with EcomDev_PHPUnit_Constraint_Layout_Abstract::getActualValue($other = NULL)  in lib/EcomDev/PHPUnit/Constraint/Layout/Block/Property.php on line 80

Add replace statement as described here https://github.com/magento-hackathon/magento-composer-installer#change-the-vendorname-of-your-module

don't complain about raw headers that are not name: value

Helper can not be mocked