MakeDb extracts IMGT files to wrong location

[Jason Vander Heiden]

IMGT zip files are extracted to current working directory, while default output file directory is the source directory. Folder should probably be deleted after completion, or not created in the first place, or at least placed in system temp location. Probably use tempfile library for this purpose.

[Namita Gupta]

Extraction still happens, but output file defaults to parent directory of input (zip or folder)