Highlight the clear button in the recents view when clicked

This commit also makes copies of the ic_notify drawables for the recents
panel to avoid any collisions with possible future changes to the
notification bar UI. (The pressed state drawable was already an unused
leftover resource).
Revert "remove launcher restart hack"

This reverts commit 66d3ba390f9de0ce01eb79f0fecfbd781d0ae048.
SystemUI: highlight quick settings and notification clear buttons

Actually make use of the drawables bestowed upon us by the Google