Correct name of ModuleSkipRenamerHandle.

Fixes #40
Merge pull request #42 from mcepl/ModuleSkipHandle

Correct name of ModuleSkipRenamerHandle.
Complex PEP8ization

* https://github.com/python-rope/rope/issues/40
* some star imports
* many too complex methods/functions
* still missing resolution on zillion of issues in
  ropetest/refactor/patchedasttest.py:

    F811 redefinition of unused 'ast' from line 3