Fixed build

Added PluginSetting, settings service needs some more thought

src/Artemis.Core/Plugins/Models/PluginSettings.cs

@@ -1,26 +0,0 @@
-using Artemis.Storage.Repositories;
-
-namespace Artemis.Core.Plugins.Models
-{
-    public class PluginSettings
-    {
-        private readonly PluginInfo _pluginInfo;
-        private readonly SettingRepository _settingRepository;
-
-        internal PluginSettings(PluginInfo pluginInfo, SettingRepository settingRepository)
-        {
-            _pluginInfo = pluginInfo;
-            _settingRepository = settingRepository;
-        }
-
-        public bool HasSettingChanged(string settingName)
-        {
-            return false;
-        }
-
-        public bool HasAnySettingChanged()
-        {
-            return false;
-        }
-    }
-}