removing export_map as formal parameter, hiding it in kwargs
added Options release docs for 1.8 and improved deprecation docs
Added better documentations and method calls in deprecation pipeline
added correct Trackeback to style docs
removed Data and Many-to-many code blocks in _meta documentation
Merge branch 'soc2014_meta_refactor_upgrade_flags_get_field' of http://github.com/PirosB3/django into HEAD
moved relation tree into a namedtuple for speed and maintainability
removed unused conditional cached property