Clean up editor code to match python coding standards

[stubb]

From @prock-fife on August 26, 2009 23:29

This issue was reported by cheesesucker

Currently the code used in the editor is not consistent to one style. We should clean up this code to match our python coding standards as described in the wiki.

http://wiki.fifengine.net/Python_coding_standards

This task depends on #372

Copied from original issue: fifengine/fifengine#371

[LinuxDonald]

https://fifengine.github.io/fifengine-docs/developer-manual/en/#_coding_standards