Data usage performance, bugfixes.

Optimize launch times by removing unneeded extra work, including
reloading data and tightening chart invalidation.  Fix invalidation
storm when sweeps overlap.  Move chart history into loader instead of
blocking main thread.

Disable "Split 4G" mode until telephony support is ready, and combine
any existing split policies.

Async loading of application details.  Remove alpha transitions to
speed up on some hardware.  Hide menus in detail mode.  Delay kicking
off force-poll.  Fix inset padding on large devices.

Bug: 5284321, 5273918, 5263056
Change-Id: I746d79c05e2a6ea97bbdbdc5d807e208328d1373

src/com/android/settings/widget/ChartAxis.java

@@ -26,9 +26,9 @@ import android.text.SpannableStringBuilder;
 public interface ChartAxis {
 
     /** Set range of raw values this axis should cover. */
-    public void setBounds(long min, long max);
+    public boolean setBounds(long min, long max);
     /** Set range of screen points this axis should cover. */
-    public void setSize(float size);
+    public boolean setSize(float size);
 
     /** Convert raw value into screen point. */
     public float convertToPoint(long value);