password login dialog

[ghost]

The wallet only encrypts secret keys, but probably other things should be encrypted as well. So, a few points:

• the create wallet page also will create the initial private database using the same secret
• the wallet interface throws up the login dialog unless it is unlocked, and when it locks the password dialog returns
• a database for encrypted data needs to be made - maybe just roll it all into the state.go state variable and instead of just syncing that, also encrypt it.

[l0k18]

unlock is done, when wallet is unlocked user can do anything, so no modals needed