Injected rules rank higher if they match against the left scope

This allows overriding “native” rules via injecting.

This commit drops support for using ‘.’ as (injection) scope selector to match everywhere. Instead use ‘*’.
Make click-sorting non-content columns a no-op
Add link arrows to Preferences → Bundles

This takes the user to the bundle’s home (generally a GitHub page) which should make it easier to clone the source repository or report issues via the bundle’s issue tracker.
Clicking link arrows should not select rows