Update to new upstream version 2.0.50 (BZ 1436178, BZ 1529540, BZ 1529541)
Use separate send2trash python module instead of the bundled one (BZ 1173410)
Disable internal CA store in favor of global one (BZ 1497504)
Use correct shebang for python2 (BZ 1478302)
Use %autosetup