Embedding ajax loader image

Authored by Osnard on Mon, Jul 17, 2:07 PM.

Description

Embedding ajax loader image

This hopefully fixes issues with jenkins, like
https://integration.wikimedia.org/ci/job/mwext-testextension-hhvm-composer-jessie/5025/console

NEEDS CHERRY-PICK TO REL1_27

Change-Id: I187753517e6d5e75ac71b55d741cf1aa40554583

Details