OpenBazaar/OpenBazaar — pull request #709 by Renelvon (2014-09-30 12:26:07+00:00)
Title: Disallow function redefinition (E0102).

### Motivation:
Redefined functions can hamper code readability and can lead to subtle errors. When intentional, they are an indicator of bad design. Let's rid ourselves of them.

### Changelog:
* Enable `pylint` redefinition check: `E0102`.
* Fix all present function redefinitions via renaming.