Data models - Added ClearDynamicChildren method

Plugins - Added async support for timed updates
Plugins - Added dialog host to plugin settings window
Data model visualization - Fixed some null references
Data model visualization - Added check to ensure parameterless getters are present

src/Artemis.Core/Plugins/DataModelExpansions/DataModel.cs

@@ -67,10 +67,8 @@ namespace Artemis.Core.DataModelExpansions
             if (key.Contains('.'))
                 throw new ArtemisCoreException("The provided key contains an illegal character (.)");
             if (_dynamicDataModels.ContainsKey(key))
-            {
                 throw new ArtemisCoreException($"Cannot add a dynamic data model with key '{key}' " +
                                                "because the key is already in use on by another dynamic property this data model.");
-            }
 
             if (_dynamicDataModels.ContainsValue(dynamicDataModel))
             {
@@ -80,10 +78,8 @@ namespace Artemis.Core.DataModelExpansions
             }
 
             if (GetType().GetProperty(key) != null)
-            {
                 throw new ArtemisCoreException($"Cannot add a dynamic data model with key '{key}' " +
                                                "because the key is already in use by a static property on this data model.");
-            }
 
             dynamicDataModel.PluginInfo = PluginInfo;
             dynamicDataModel.DataModelDescription = new DataModelPropertyAttribute
@@ -125,6 +121,15 @@ namespace Artemis.Core.DataModelExpansions
             }
         }
 
+        /// <summary>
+        ///     Removes all dynamic data models from this data model
+        /// </summary>
+        public void ClearDynamicChildren()
+        {
+            while (_dynamicDataModels.Any())
+                RemoveDynamicChildByKey(_dynamicDataModels.First().Key);
+        }
+
         /// <summary>
         ///     Gets a dynamic data model of type <typeparamref name="T" /> by its key
         /// </summary>