Key add at branch level

[fischertc]

Rather than having to type the full path in every time to the key when we have hundreds of keys at many levels in our tree it would be nice if you could add one with a full path then click the last item in the path and have the add start from there. For instance:

TestRoot.branch1.branch2.branch3.testkey="test"

If I click on "keys" on the display it shows a treeview of this path. I would like to click on the "branch3" branch then click [Add] and have it prefill the path up to branch3 with the separator at the end for me to add the key name