update crosswiki indexer to set main_wikia_domain field
PLA-1461 make series search to use main_wikia_domain
search also aliases of wiki domains
fix tests
fix indexer
XXXXXX THIS COMMIT SHOULD NOT BE ON PRODUCTION, REVERT UPON SIGHTING
Merge remote-tracking branch 'upstream/PLA-covarage-tests' into dev-pch
Merge remote-tracking branch 'origin/tmp_DELETE_AFTER_2ndJune2014' into PLA-covarage-tests