Mob 226 - SearchSuggestionsApi (MOB-173)

SearchSuggestionsApi based on "Link Suggestion" extension. (I' worked on wrong branch. Should be MOB-173 instead of MOB 226)

https://wikia-inc.atlassian.net/browse/MOB-173

@federico-lox @hakubo @owend @themech @jacekjursza @idradm