Benglin/Dynamo — pull request #160 by aosyatnik (2014-10-30 15:33:23+00:00)
Title: DUI: remove key navigation from library view.

Priority: _Critical_
Suddenly, I found out, that LibraryView should not have any navigation. So, I created `PreviewKeyDown` to handle key down.

Reviewers
@Benglin ,@vmoyseenko, please take a look.