MozStumbler v0.11.0

* Downgraded to gradle 1.9 to fix fdroid builds (@cpeterso)
* Updated German translation (@zod)
* Use getAllCellInfo() API for more details about mobile network (@illarionov)
* Added Italian translation (@musuruan)
* Added Catalan translation (@lua86)
* Added Bengali translation (@rabbihossain)
* Updated Finnish translation (@ojarva)
* Reduced unnecessary timestamp precision (@tamcap)
* Added Taiwan's train SSID to blocklist (@petercpg)