Update importing_blockchain.md

[jcklasseter]

With the most recent gui release download for windows 10 from https://getmonero.org/downloads/ (Lithium Luna) the supported relevant command line option is:

 --guard-against-pwnage arg (=1)       Verify blocks and transactions during
                                        import (only disable if you exported
                                        the file yourself)

Since --verify 1 is not only not supported anymore, but is default behavior it is misleading and should be removed from the guide.

[mattcode55]

I think you also need to change the file in the template directory.

[MaxXor]

I really suggest we should change the way multi-language is implemented. We should check how bitcoinxt/website#51 have implemented it. It's way easier to maintain.

[erciccione]

I agree @MaxXor, updating the website is a pain at the moment. A lot of manual work is needed with every update, that's going to be worse with new languages coming. Maybe @rehrar can take a look at that

[MaxXor]

I'll open a new issue later to track progress.

edit: #725