PT-BR: Update translation

Change-Id: Iedfdfea4bf2485823ccf6867492ce831e5b4de62
SystemUI: fix memory leaks

ContentObservers are being registered without being unregistered,
causing old objects not to be garbage collected. This causes memory
leak if the classes are destroyed and recreated throughout the
device's uptime.

SearchPanelView is recreated every time the screen is turned on.
StatusBarIconView is created every time a notification is triggered.

JIRA: CYAN-650
Change-Id: Iabd3221fc2b0c848396af1790fd09424be602e7e
Merge "PT-BR: Update translation" into cm-10.1
Merge branch 'cm-10.1' of github.com:CyanogenMod/android_frameworks_base into cm-10.1

Merge latest commits from cm-10.1