[FIX] doc building and warnings

doc:

* fix incorrect doc comments (documenting params which don't exist)
* correctly quote non-refs
* fix role label syntax (backticks must be escaped)
* add newline to fix warning

JS doc parser:

* fix handling of already-resolved objects
* fix handling of non-string properties (e.g. foo[0] at module toplevel)
* don't blow up if subject of .include call can't be resolved (just ignore)

Others:

* add translator support for ``problematic`` node (apparently used for
  some refs by recent Sphinx)