Switches the download method so it uses requests library and supports sessions. Some minor cleanup.
Switches the download method so it uses requests library and supports sessions. Some minor cleanup.

Andr3iC/courtlistener,Andr3iC/courtlistener,brianwc/courtlistener,voutilad/courtlistener,voutilad/courtlistener,shashi792/courtlistener,voutilad/courtlistener,voutilad/courtlistener,wmbutler/courtlistener,wmbutler/courtlistener,brianwc/courtlistener,wmbutler/courtlistener,wmbutler/courtlistener,brianwc/courtlistener,wmbutler/courtlistener,shashi792/courtlistener,voutilad/courtlistener,Andr3iC/courtlistener,shashi792/courtlistener,Andr3iC/courtlistener,Andr3iC/courtlistener,brianwc/courtlistener,shashi792/courtlistener,brianwc/courtlistener,shashi792/courtlistener