Transmogrify.ploneremote

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- support setting modified date from last modified header or custom field [djay]
- if existing content will avoid reseting modification date [djay]
- support setting a static portlet [djay]
- support setting position in parent [djay]
- support finding and moving content when it's path changes [djay]
- improve logging messages, less INFO output [djay]
- honour parent folder when it's not plone root [Mathieu Le Marec - Pasquet]
- fix skip_existing and support skip_fields to control whats updated [djay]
- HEAD request to determine redir, move instead of delete if exisitng content and now sets position in parent
- fixed prune to use listFolderContents and handle moving instead of delete [djay]
- fix existing image detection [Ivan Teoh]
- check if oldid exists before to try to move an object [gborelli]
- improved checking of existing items in remoteconstructor [gborelli]
- don't join the path when parentpath is empty [ivanteoh]
- honour parent folder when it's not plone root [kiorky]

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- fix import of pathsorter after its move

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- remoteconstructor: handle uploading with moved content or content thats changed type [djay]
- ploneprune: ignore items with no path [djay]
- handle Protocol errors in schemaupdater [djay]
- handle some xmlrpc errors better [djay]
- add conditions so can skip existing [djay]
- improve documentation [djay]

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- Various bug fixes [aclark]
- Depend on transmogrify.pathsorter [aclark]

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- fix uploading html in plone 4.1 by setContentType
- log errors to logger and continue
- simplify update code
- better logging
- close files so don't run out of file handles

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- handle uploading files using less memory
- fix bug in debug output