App rework, pt 1 - updates to new user workflow

[yeastplume]

Part of an effort to go through the app screen-by-screen, testing, fixing, and adding missing functionality.

• Move grin-gui related files to $HOME\.grin-gui instead of $HOME\grin as requested by Re-think directories structure of the wallet #76
• Wallet name no longer 'advanced', change to My Grin Wallet as default name
• Some font changes on Advanced Screen
• Implement tab/shift-tab to cycle through text inputs, note this functionality is incomplete in iced-rs, and tabbing / keyboard focus doesn't work on anything other than text inputs
• Default app styling for iced new TextEditor widget
• Add restore from keyphrase TextEditor to create wallet screen
• Changes to default error message display to show more information without having to click on 'detail'
• Hook up recovery phrase to wallet creation, and validate if box is selected
• Update from 5.3.0 merged contracts branch