Build notifications icons / pulse

don't use urgent, because then you have to dismiss it manually 20 times.
add icons for the 2 build cases (win/fail).

Change-Id: I8d48804a2f59d7ac1946e64e0c6d87ed5d4fee40
Remove notication flashing. Increase exp time to 10s.

Indecent exposure is a felony, and the experiation time seems to be a very loose lower bound on the time the notification is actually on the screen, so scroo it.

Change-Id: I3a06ce59cb1b728616a75d00ebffeb353bf0ba81