Merge pull request #95 from shaunarundell/master

Display  "Search for Movies,TV Shows and People" on empty search page
Quick fix for issue #97 Backspace and Alt+LeftArrow key downs being handled before they reach OnKeyDown in BaseWindow
Merge pull request #98 from cheshire3000/master

Quick fix for issue #97 Backspace and Alt+LeftArrow key downs being hand...
Fixed repeating back navigation commands
Merge git://github.com/MediaBrowser/MediaBrowser.Theater
Merge pull request #99 from cheshire3000/master

Fixed repeating back commands
updated nuget
Input & Command mapping part 1