Import books times out when executed from web ui

[th3r00t]

Seems the async operation is timing out before starting, this is a new bug that wasnt present the last time I installed pyshelf. As I have been unhappy with the current websocket implementation I may take this opportunity to revisit that as well. For now books imports only working via calling import books from the install directory.

[004a]

The shebang of /pyshelf/importBooks is unable to execute /usr/bin/env python, which does not exist in the current docker image 361d9e08a935. Modifying the script to execute /usr/bin/env python3 fixes the script.

The modified script does not look fix an import attempt from the Web UI.