[Kimchi-devel] Apply code guidelines

Hi! I am sending this patchset as an attempt to make the Kimchi code more consistent. Some of the changes are specified by the PEP8 Style Guide, some of them are not. This is only *one attempt*; these rules do not need necessarily to be commited. If you do not agree or have any question regarding the patches, feel free to discuss them here. Currently, there is no standard for the Kimchi code and I think we should have an official code guideline, that is why I am trying to apply these patches. It does not need to be exactly these rules but adopting some kind of style instead of the subjectivity of each developer will be a nice addition to the project. As soon as we define our guidelines, we should have a wiki page or some file describing them all.