Problems/Feedback with/for the object dock

As discussed on irc here a list:
- typo: "Propertes"
- when collapsing the view while had object selected i can still move / delete it
- no removal of object layers possible inside of the dock while i can add them there
- maybe a shortcut for opening the properties? (many programs have Alt+Enter for eg.)
- no duplication of object layers possible while it is for single objects (in layer menu it is of course)

But: great work anyway ;)

Start by locating the object dock implementation and its existing add-layer and properties actions. Check each listed behavior—typo, collapsed-selection interaction, layer removal, properties shortcut, and duplication—and define completion as each requested behavior being addressed without breaking the current add and layer-menu functionality.

Written by the indexing model from the issue text.