Bug 491278

SUMMARY
Logout UI simplifications made for 478022 made logout options less accessible from Application Dashboard and Lock/Logout plasmoid.

STEPS TO REPRODUCE
1. Add Application Dashboard
2. Add Lock/Logout plasmoid
3. Try to enter sleep/hibernation from either

OBSERVED RESULT
1. There's no quickly accessible options to sleep or hibernate in Application Dashboard. They are one click further away behind Power/Session submenu.
2. Now for Lock/Logout user is forced to enable separate buttons for all the required options, witch takes a panel space.

EXPECTED RESULT
As in Plasma 5/6.0, ability to access logout options easier.
As per the commit title, add options that would invoke the logout screen without a specific option and add this option to all the relevant plasmoids.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: KDE Neon
KDE Plasma Version: 6.1.x

ADDITIONAL INFORMATION