Add some Samsung Galaxy models

GT-I8190, GT-I9305, GT-9500

I should have checked previously ;-)
Probably some are still missing, but that's nevertheless filling gaps.

References:
* http://www.botsvsbrowsers.com/listings.asp?search=samsung
* Wikipedia, to confirm they are actual models

By the way, not sure this list is really needed, but you already know that ;-)