Merge pull request #38 from laurentpayot/master

two small MapField bugfixes
MapFields with FileFields save now. Not exactly sure what though.

But to gte more peopple testing this, here is the code. Assume it's
broken please and don't use this in production.
Correctly init proxy_class for new images
Forgotten print statement
Handle file fields in list fields too and a bit of clean up
get the filename for uploaded files after an old file has been deleted
Better support for custom fieldgenerators.
Correctly handle ListField(FileField())
Version bump
Git ignore
Romved eclipse stuff
DocumentWrapper clean and removed all _admin_opt references
Define format_html if we can't import it from Django. Closes #41
Avoid format_html altogether now. A real fix for #41, not just copy&paste
Removed the relationship experiment
Deal with None in EmbeddedDocumentFormSet._construct_form
Correctly handle widget overrides in Map and ListFields
Version bump
Handling of unique_with and ListField(ReferenceField()). Closes #43
reduce is in functools module in Python 3