Zen: Remove alarm warnings, color the subhead instead.

- When selecting "None" in the dialog, remove the footer warnings
  about alarms, and associated bits.
- Update subhead text for "None".
- Keep track of how often "None" is used (defined as a user change
  during a visible dialog session) and color the subhead text
  with the warning color until it's been used five times.

Bug:17283115
Change-Id: Ief8a1c557716ec2f581b8338511432d17ac0d371
diff --git a/packages/SystemUI/res/values/config.xml b/packages/SystemUI/res/values/config.xml
index e940b18..121a8bf 100644
--- a/packages/SystemUI/res/values/config.xml
+++ b/packages/SystemUI/res/values/config.xml
@@ -195,5 +195,8 @@
 
     <!-- Tiles with feature timeouts: number of days to show after feature is used. -->
     <integer name="days_to_show_timeout_tiles">30</integer>
+
+    <!-- Number of times to show the strong alarm warning text in the volume dialog -->
+    <integer name="zen_mode_alarm_warning_threshold">5</integer>
 </resources>