#52 Incorrect node selected on create/remove

[snarfle]

When I remove an update that has several others in the category (for example Java), when the delete completes, the left pane is adjusted to point back to the Updates node rather than staying at the Java node. Also, the right pane doesn't get updated and still shows the deleted entry. When the java node is manually re-selected, the correct list is shown (ie the deleted update is removed).

Likewise, when right-clicking on the Java node to create an updated after the update is created, the Update node (rather than the java node) is selected. The right pane is not updated to show the new entry until the Java node is re-selected.