persist selected path correctly. fixes #240.
persist selected path correctly. fixes #240.

The selected path was only persisted into viewState when chosen by shortcut. Now, it is also persisted when chosen via the dropdown menu.
Now there are two watches in ShowHierarchy.js that might create a watching loop, but angular seems to handle this.

IPS-LMU/EMU-webApp,IPS-LMU/EMU-webApp,IPS-LMU/EMU-webApp,IPS-LMU/EMU-webApp,IPS-LMU/EMU-webApp,IPS-LMU/EMU-webApp