Merge pull request #1222 from jezdez/bug802041

allow all users to change the translation sources of wiki documents
fix bug 705470 - Allow more specific comment for reverts
Merge pull request #1247 from darkwing/revert-comment-705470

fix bug 705470 - Allow more specific comment for reverts
fix bug 877369 - use seoSummary for result display
return summary if no highlights
update search tests
Use the jenkins elasticsearch index as given from Sumo.