Unable to Download from LGTM for certain databases.

[aeisenberg]

Certain databases cannot be imported directly from LGTM. They must first be saved to disk and then imported. An example is https://lgtm.com/projects/g/torvalds/linux/ci/#ql (the python database).

I discovered this when looking into #621.

I think this is because of how the zip file is constructed. Our current approach is to unzip the http request as it streams in, but this is more error prone if the central directory is not completely correct. See ZJONSSON/node-unzipper#149

I may need to try another approach, where we first download the zip file to disk, and then unzip it into the extension.

[aeisenberg]

Just got a message that the following small database is also failing. amphtml