Closes #16820. The wallet name escaping issue in that issue predates #15450 and is fixed by #16826.
- rename encrypt() to encryptWallet(), and blank() to makeBlankWallet() // EDIT: updated to isEncryptWalletChecked() isDisablePrivateKeysChecked() isMakeBlankWalletChecked()
- fix naming of askPasshprase() to askPassphrase()
- fix passphrase labels and tooltip in createwalletdialog.ui and askpassphrasedialog.ui
- fix grammar of labels in askpassphrase dialog and WalletController::closeWallet
- fix autofocus in CreateWalletActivity::askPassphrase()
Squashed down to three commits.
Reviewers, to test manually: build, launch the gui wallet, and look at labels/tooltips/focus with the create wallet, encrypt wallet, change password, and close wallet commands.