fix code coverage notices
renamed MediaWikiInterface to MediaWikiService
string-replace MediaWikiInterface to MediaWikiService
replace "$interface" with "$service"
replace "$mockInterface" with "$mockService"
renamed mw service test
renamed "$this->interface" to "$this->service"
renamed accessors and mutators for interface to service
rename string 'interface' to 'service'
renamed "reflInterface" "reflService"
update code comments to obliterate mention of "interface"
fixed ambiguity errors introduced from find and replace
Merge branch 'rename-mwservice' into refactor-search-resultsets
Merge branch 'refactor-search-resultsets' into crossWikiSearchRedesign