HG-110 Custom smart banner

https://wikia-inc.atlassian.net/browse/HG-110
https://wikia-inc.atlassian.net/browse/HG-215

Related to https://github.com/Wikia/app/pull/5385
@bkoval I checked this scenario and Chrome doesn't care if I use `window.open(link, '_blank')` or `window.document.location.href = link`. It opens Play Store in the same tab anyway :/