- Retain the specification from the Host header as a Request's description.
- Expand upstream proxy specifications to include the scheme. We now say https://hostname:port
- Move the "R" revert keybinding to "v" to make room for a reverse proxy
binding that matches the command-line flag.
I want each view to have a more coherent set of bindings. This means minimizing
the global bindings, and making some bindings accessible only from screens
related to their functionality.
