Fixed display of '2147483647' on statusbar

For telephony  network signal strength text view
for some invalid signal values instead of displaying
Integer max use -∞.

Change-Id: I93a16a3b16df7a18cc805356904ab9027e7d0aee
remove references to nonexistent ringtones

Change-Id: Ibf941da04c081cf065734d728427d033da3e475d
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0