Enable local extraction of zipfiles

[noirscape]

This should allow for easier accomodation of new files in updates as opposed to me having to keep releasing updates for each new file added by a project.

Current thoughts and ideas:

• Should not update configs. Atmosphere stores it's config with the .ini extension so this should be easy to implement.
• Should not overwrite existing title patches. Perphaps extract to an intermediate directory first and then move over all the files to the proper filesystem?

Need to look into changing the server scripts, should just equate to storing the atmosphere and hekate zipfiles directly.

Will end up using the zipfile module in the stdlib to do this.

Fixing this issue also closes #3.