Started on-demand scopes are not shutted down

[Didier Roche-Tolomelli]

After few hours without reopening the dash, I still have the scopes that were started by the server on demand running:
didrocks 3014 0.0 0.2 505932 16340 ? Sl 07:41 0:00 /usr/bin/python3 /usr/share/unity-scopes/scope-runner-dbus.py /usr/share/unity-scopes/musique/unity_musique_daemon.py
didrocks 3019 0.0 0.2 505260 20852 ? Sl 07:41 0:00 /usr/bin/python3 /usr/share/unity-scopes/scope-runner-dbus.py /usr/share/unity-scopes/soundcloud/unity_soundcloud_daemon.py
didrocks 3021 0.0 0.1 490484 15212 ? Sl 07:41 0:00 /usr/bin/python3 /usr/share/unity-scopes/scope-runner-dbus.py /usr/share/unity-scopes/gmusicbrowser/unity_gmusicbrowser_daemon.py
didrocks 3025 0.0 0.2 505988 16480 ? Sl 07:41 0:00 /usr/bin/python3 /usr/share/unity-scopes/scope-runner-dbus.py /usr/share/unity-scopes/guayadeque/unity_guayadeque_daemon.py
didrocks 3026 0.0 0.1 430984 15860 ? Sl 07:41 0:00 /usr/bin/python3 /usr/share/unity-scopes/scope-runner-dbus.py /usr/share/unity-scopes/audacious/unity_audacious_daemon.py
didrocks 3031 0.0 0.2 505984 16476 ? Sl 07:41 0:00 /usr/bin/python3 /usr/share/unity-scopes/scope-runner-dbus.py /usr/share/unity-scopes/clementine/unity_clementine_daemon.py

This is worrying as we are going to have potentially 40+ processes started on demand (all python), taking here 15/20 Mb of memory. As discussed previously, they should shut down after a period of inactivity.