Dialer: Make the call stats spinner match the other actionbar theming

Change-Id: I9bb5a1e344aa33c4651a20f37875bbed8f3bd9e3

Conflicts:
	res/layout/call_stats_filter_spinner.xml
	res/values/styles.xml
Improve callstats number matching code.

Make it a little more efficient, and make sure the ContactInfo and
CallStatsDetails instances always stay in sync.

Change-Id: I0b01e6fc036ce70dccbccf1d9002843331304d50