1.0.0-beta, no way to set password for customer after placing order

[wigman]

After placing an order the customer has the option to click a button to create an account in a 'one-click' action.

The customer then receives an signup email that says:
Password: "Password you set when creating account".

So there's no way to login, except for requesting a forgotten password link.

Tested in default theme.

[vpelipenko]

Internal ticket: MAGETWO-40511

[sivaschenko]

@wigman Fix for this issue is delivered to develop branch

[wigman]

@sivaschenko Thanks Sergey!