Design a user interface for Lox

We need to start thinking about Lox's user interface. In an ideal world, we would build it into Tor Browser and make it so that users will never be exposed to bridge lines at all.

For now, Salmon supports the following user-facing actions:

1. Sign up by being invited by somebody else.
2. Sign up by registering.
3. Request a new bridge.
4. Invite somebody else to Lox.
5. (Optional) Take a look at your reputation