Plone.app.querystring

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- bugfix for 22: Names not matching for operations getObjPositionInParent
plus test
[jensens]

- Implement multipath queries:
- Parsing a path returns always a list.
- Special handling for paths in parseFormquery.
[maethu]

- Fixes https://dev.plone.org/ticket/13251
[mathias.leimgruber]

- querybuilder results can now be manipulated using
``IParsedQueryIndexModifier`` named utilities.
[keul]

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- fixed broken handling of limit and batch size.
[bosim]

- pep8 fixes
[bosim]

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- be able to include a depth value onto path query string
[vangheem]

- Use plone.batching.
[khink]

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- Fix UnicodeDecodeError on utf8-encoded Subject strings.
[tisto]

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- getVocabularyValues now checks if the vocabulary utility is missing,
if it is the utility is just ignored. This makes the module tollarant to
missing vocabulary utilities.
[bosim]

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- _relativePath handler can now walk through the site structure (not only upwards)
_path handler respects absolute paths without leading nav_root path
[petschki]