CMS-1996 Upgrade ElasticSearch to 0.90.4

Yessir.
Added logging to XsltTemplatesCacheEntry. This is just temporary to see if it's really slow on some filesystems.
Switched logging to debug.
CMS-1969: Increase font-size in re-index log, add emphasis for successful re-indexing
CMS-1969: remove formatting from log (should be done another place)