MOB-1577, add min / max width and height validation
Merge branch 'MOB-1392-intmap-extension' into MOB-1577

Conflicts:
	extensions/wikia/WikiaInteractiveMaps/WikiaInteractiveMaps.i18n.php
MOB-1577, remove hardcoded min and max values form messages
MOB-1577, self vs static :-)
Merge pull request #3545 from Wikia/MOB-1577

Mob 1577