Navring: fix NPE if app uninstalled and in Navring

Change-Id: Iec7f79f9d7c236d2afe3788dc35f890b2e3c4f84
Fix leak with pie control toggle

Change-Id: Ief23e03458fcd5cd43de01f431296c8be624c344
Screenshot Toggle with timeout Control

Change-Id: Ice12874f20b91c36b9ec4101578c9276dee1dfd9