closes#1832
The shred map (xref) builder was issuing warnings. This fix includes
- Adjustments to the shredder map builder itself so that it
understands, e.g., app-project relative example paths.
- `**/guide/glossary.jade` now (Jade) `includes` the shared parent
`glossary.jade` rather than (Harp) importing (via `partial`). This
fixes `makeExample` path issues in the glossary.
- Adjusted some `makeExample` paths that were ok for site build, but
confused the xref tool.
Patrice Chalin
Peter Bacon Darwin