Refactored DebugInfo to use an internal dictionary of Stopwatches.
Renamed DebugInfo to DiagnosticInfo.
Added ShowAll() function to DiagnosticInfo.
Added DiagnosticInfo for EntityUpdatePerformance and
EntityRenderPerformance. Added ShowTop() method in DiagnsoticInfo.
Clear EntityRenderPerformance and EntityUpdatePerformance during
MapLoad