Add Meta+L shortcut for "Lock Session"
This shortcut is used by default on Windows and it's also nice to have global shortcuts
use the Meta key in general.
- Log into a new user account or reset the ksmserver section in the Shortcuts KCM
- Hit Meta+L or ctrl+alt+L
- Observe that both work
Reviewed By: VDG, GB_2
Subscribers: nicolasfella, plasma-devel
Differential Revision: https://phabricator.kde.org/D20178