[feature request] clear search box after launching app from drawer

[lameventanas]

It would be good if the search box was cleared after starting an app from the drawer.
Once I have launched an app from the drawer, the next time I bring it up I will be searching for a different app, so the search box should be cleared automatically for a different search.

[lameventanas]

Also, for people hiding apps and then launching them via search box, this is essential.