BAC-239: s/bulid/build/g  fix typo
* initial version of test file
* fix syntax
BAC-239: ImageServing code cleanup
BAC-239: ImageServing code cleanup
BAC-239: use meaningful constant instead of 0
BAC-239: ImageServing code cleanup
ImageServingUnitTest: solve class names conflict
BAC-239: ImageServingHelper cleanup

* return indexed images when helper methods are called
* remove unused method
BAC-239: add infrastructure test for ImageServing
BAC-239: add infrastructure test for ImageServing (more test cases)
Merge pull request #771 from Wikia/imageserving-unit-tests

BAC-239: Create unit and integration tests for ImageServing