WhitePages API: Only reload page if the first load has the UUID for the cookie

Change-Id: Ifad528f06f16a6a5b61bcad88921b8df49a08612
2D Pie Chart in call stats.

Extracted PieChartView to unify with the one with Settings app

Change-Id: I7776547cdb2fe49499c5f96089ca5f6027a4dbec