Some fixes to your app

[NEW]
* Russian translation
* Allow to use with custom API Key
[BUGS]
1) Guys, I'm stupid git user, so, not everything is perfect with commits, f.ex commit N1 is almost the same is N3 and N2 reverts N1, I can't delete them, sorry
2) Something strange with onClickListener. I can't make textviews with result link clickable. Tried many things, don't work. Could you look into it? 
3) I've edited upload rules and moved your api key to constant for easied editing for you.