Revert "Inject reference to extension into configurator closure to register autoload"

This reverts commit 7d067fb417bbe06c899ec303d88b8f718c187993.

Conflicts:
	src/MageTest/PhpSpec/MagentoExtension/Extension.php
Revert "Refactor extension - make methods smaller"

This reverts commit 7bc5a50ac9cf16ec2323073882d73dd842517030.
Revert "Decouple magespec from magento database"

This reverts commit 910da605d19eebba745d82ba62b53565e90c8ef7.

Conflicts:
	src/MageTest/PhpSpec/MagentoExtension/Extension.php