Hide pin to taskmanager when already pinned
Right now when an app is already pinned to the taskmanager, kickoff thinks as is not pinnable anymore, adding the icon widget to the panel is still needed.
This removes both the pin and the add icon to panel actions when is already pinned
On the long term i would like to have the same per activity context menu that the taskbar itself has, but since it would be a more invasive change, should be at least for 6.1
Edited by Marco Martin