Plugins - Added timeout for plugin enable

Plugins - Delete lock file even on exception, only leave it in place on crash
Plugins - Added --ignore-plugin-lock startup argument
UI - Renamed -autorun argument to --autorun

src/Artemis.Core/Services/Interfaces/IPluginService.cs

@@ -23,7 +23,7 @@ namespace Artemis.Core.Services.Interfaces
         /// <summary>
         ///     Loads all installed plugins. If plugins already loaded this will reload them all
         /// </summary>
-        void LoadPlugins();
+        void LoadPlugins(bool ignorePluginLock);
 
         /// <summary>
         ///     Unloads all installed plugins.