changed an old maintenance file to work again
added new parameter
added json parameter
merged existing messages with collected while displaying on screen, used JSON_UNESCAPED_UNICODE flag for json
translate default POI categories
added translations from messaging.wikia.com
added messages from messaging.wikia.com
added translations for POI parent categories; translations taken from ticket MOB-2272
Fixed formatting
merged dev and resolved manually conflicts in WikiaInteractiveMaps.i18n.php
addressed code review notes
added uselang params to the iframe, removed port
added italian translations for parent POIs categories; translations from Jira ticket MOB-2272
Merge pull request #4257 from Wikia/MOB-2272

MOB-2272