Suggestion: Allow user to copy generated address on "Create a new account" pages

Created by: ltfschoen

• On the second "Create a new account" screen it shows the username and associated address that was created, and asks the user to remember their secret phrase. A possible improvement is to given them the option to copy the generated address "0x..." so they can save it straight away along with their secret phrase and password. Currently this functionality is available only once you've created an account and then click the account on the Accounts page, and then click the username/address at the top of the page