Simplify gopass autoentry script heavily. Will pick up user credentials
from gopass store and enter them in whatever way the user wishes.
Fix key entry for changes in gopass 1.9.* password display options.
Several default variables can be customized, see the top of the
rofi-gopass file.
Rofi gopass thematically belongs to gopass, not rofi. It depends on
rofi, so it should check for its existence; but it is more closely
entangled with gopass.
