Remove the unzipped folder from the MakeDb output

[Jason Vander Heiden]

MakeDb makes a folder with the zip file output in the current directory, rather than --outdir. We don't need to retain this "temporary" folder - use the tempfile package to handle this safely. Also, check if the problem with working on zipped files is resolved (truncation of large files). If so, this would be a better solution than tempfile.

[Namita Gupta]

Might have done it in a questionable way, but check if input file is zip, if it is, remove the folder of the same name after running MakeDb. Seems to work fine.

[Jason Vander Heiden]

Using the tempfile or zipfile library would be better.

[Jason Vander Heiden]

I think maybe we should leave this open (even though it's fixed), as a reminder to do a safer implementation later.

[Namita Gupta]

Extracts to temp directory, which is later deleted.