*DateSetSpinner and DateSetListItem added (based od TimeSetSpinner and
TimeSetListItem)
*BellSideListItem ctor without title added
*TimeUnitsModel changed to more accurate DateTimeUnitsModel name
Added ThreeBox template layout type. Applied it to Pure header.
Created BellBaseLayout for most of Bell windows. Modified
SideListView to proper handle new layout with page bar on/off.