Save user name (and other user inputs) to Local Storage

[Calmanning]

We should make it so our app can save the user's name (and color/birth input) into local storage, so they don't have to enter it in all the time.

There are a couple of ways to do this, but the most effective (for the user) would be to make sure that their name (and other data) always populates in the displayed fields.

• User name is saved to local storage
• User name appears in input field after it is saved to local storage
• additional input data is saved to local storage
• additional input data is populates in their corresponding fields after being saved to local storage