get_request_data is writing to location where permission could be denied

[wd15]

Describe the bug

The function get_request_data writes to a location that the user might not have to permission to write to, https://github.com/usnistgov/jarvis/blob/master/jarvis/db/figshare.py#L284. Better would be to use a temporary directory given by the OS. Writing to the location where the software is installed is not a good idea for a number of reasons including that the areas used for installation should only be written to by the package manager.

[knc6]

Thanks for the suggestion. How about using store_dir ?

https://github.com/usnistgov/jarvis/blob/master/jarvis/db/figshare.py#L337

[wd15]

That's fine. If store_dir is None then maybe use the temporary directory?