Fix for i18n

All the structure changes should be performed BEFORE any skeleton generation
Exclude pycharm files
Simplify code base
Disable ducktyping for classes inheritance and better metaclass inheritance
Switch requirements from freez
Fix for dotted dicts and pymongo 2.7

Provide fix for dotted dict and i18n dict. There was huge __getattr__ protocol violation in those classes thar caused problems with new versions of pymongo c extension
Restore Python 2.6 compatability
Another python 2.6 compatability fix