Set uploaded == total in response event in case of error.
Tests: abort twice.
Tests: errors.
Tests: FileLoader.update.
Tests: test for replace sendRequest and handleResponse.
Removed unneeded line.
Tests: getUploadUrl tests.
Tests: isExtentionSupported.
Tests: getUploadUrl - throw error if no matching config
Tests: getExtention.
Tests: UploadsRepository.