Display conditions - Implemented expression tree creation

Display conditions - Use the most appropriate number input
UI general - Use current localisation for decimal seperators and enfore in inputs

src/Artemis.UI/DataModelVisualization/Input/IntDataModelInputViewModel.cs

@@ -1,5 +1,4 @@
-using System;
-using System.Text.RegularExpressions;
+using System.Text.RegularExpressions;
 using System.Windows.Input;
 using Artemis.Core.Plugins.Abstract.DataModels.Attributes;
 using Artemis.UI.Shared.DataModelVisualization;
@@ -17,10 +16,5 @@ namespace Artemis.UI.DataModelVisualization.Input
             var regex = new Regex("[^0-9]+");
             e.Handled = regex.IsMatch(e.Text);
         }
-
-        protected override int ConvertToSupportedType(object source)
-        {
-            return Convert.ToInt32(source);
-        }
     }
 }