[Ayatana] HUD shouldn't be only for searching but also for finding

[Michal Strba <faiface2202@xxxxxxxxx>]

Hello!

The idea of HUD is good, but currently it's totally incomplete.
Look at the Ubuntu Dash and you can see what it can do. I can not only 
searching for apps and files (or music, etc) but you can also find 
everything (except files). You can go for example to Games and see all 
games you've installed. So when you wanna play a game, you don't have to 
type "game", "3d", "platformer", "strategy" or something, you can 
directly look at everything in the Games category.
Same thing is the menu. I confusing to have only a search bar and search 
for a things I want. I also need to view whole the menu (not really 
whole of course).
So HUD should inspire by the Dash and improve its "skills".