Show password requirements

[john-light]

When I enter a seed, it asks for a password. I entered a password, it says too short. I entered another, it says too weak. Some guidance on the password requirements would be great!

For example:

Please enter a password that has at least one capital letter and one symbol

Alternatively: I actually wouldn't mind if the password requirements were removed altogether. The way I think of this is, if an attacker gets to the point where they are exfiltrating data or entering characters into a user's computer, the user is quite pwned already and it doesn't really matter how strong their password is...

[floating]

@john-light We've added some initial guidelines re: password requirements in #231 to be merged shortly in 0.2. In future versions of Frame we will continue working to provide more helpful guidelines/feedback and find the right balance regarding passwords requirements.