Plugins - Implemented enabling/disabling (doesnt work for devices)

Plugins - Disable plugins that caused a crash
Tray icon - Added menu items for quick access

src/Artemis.Storage/Entities/Plugins/PluginEntity.cs

@@ -0,0 +1,16 @@
+using System;
+
+namespace Artemis.Storage.Entities.Plugins
+{
+    /// <summary>
+    ///     Represents the configuration of a plugin, each plugin has one configuration
+    /// </summary>
+    public class PluginEntity
+    {
+        public Guid Id { get; set; }
+        public Guid PluginGuid { get; set; }
+
+        public bool IsEnabled { get; set; }
+        public bool LastEnableSuccessful { get; set; }
+    }
+}

src/Artemis.Storage/Entities/Plugins/PluginSettingEntity.cs

@@ -1,7 +1,10 @@
 using System;
 
-namespace Artemis.Storage.Entities
+namespace Artemis.Storage.Entities.Plugins
 {
+    /// <summary>
+    /// Represents the setting of a plugin, a plugin can have multiple settings
+    /// </summary>
     public class PluginSettingEntity
     {
         public Guid Id { get; set; }