Make these modules' names more like the heavily-used types they
define (CliOpts, UIOpts, WebOpts). This is consistent with
RawOptions and ReportOptions, and helps with code navigation.
- register screen:
- smarter width-sensitive layout, with multi-commodity amounts on one line
- items are sorted in date order
- jumps to the latest item by default, with consistent scroll position
- more prerendering, might speed up movement/paging slightly
- themes! --theme to select, --help to list (current themes: default, terminal, greenterm)
- border tweaks - dropped side borders, added side padding
