Added plugin dir parameter

- Added plugin dir parameter
- Fixed critical architectural bug that effects plugin UI in production mode
- Updated implementation of embed FS routing
- Minor dark theme update
- Fixed ztnc UI bug for msgbox and confirm box

src/web/components/plugins.html

@@ -308,7 +308,7 @@ function initSelectablePluginList(){
       $("#selectablePluginList").append(`
         <div class="item" style="pointer-events: none; user-select: none; opacity: 0.6;">
           <p><i class="ui green circle check icon"></i> No plugins available to assign</p>
-          <p>Plugins can be installed to Zoraxy by placing the plugin files in the <code>./plugins/{plugin_name}/</code> directory.</p>
+          <p>Plugins can be installed to Zoraxy by placing the plugin files in the plugins directory.</p>
         </div>
       `);
     }