- updating part names to conform to a <name>Part convention
--HG--
branch : dev
rename : src/Orchard.Web/Modules/Futures.Widgets/Controllers/WidgetHandler.cs => src/Orchard.Web/Modules/Futures.Widgets/Handlers/WidgetsPartHandler.cs
rename : src/Orchard.Web/Modules/Futures.Widgets/Models/Widget.cs => src/Orchard.Web/Modules/Futures.Widgets/Models/WidgetPart.cs
rename : src/Orchard.Web/Modules/Futures.Widgets/Models/HasWidgets.cs => src/Orchard.Web/Modules/Futures.Widgets/Models/WidgetsPart.cs