Fix missing smoothieware Z position

Be sure SD file list is not generated at start in case of printer
printing

Author: luc-github

index.html.gz

@@ -6,7 +6,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <title>ESP3D WebUI</title>
     <script>var target_firmware="";</script>
-    <script>var web_ui_version="0.9.80LE";</script>
+    <script>var web_ui_version="0.9.81LE";</script>
     <script>var direct_sd=false;</script>
     <script>var fw_version="";</script>
     <script>var primary_sd= "/ext/";</script>

www/index.html

@@ -87,7 +87,7 @@ function initUI() {
     init_extruder_panel();
     init_command_panel();
     init_controls_panel();
-    init_files_panel();
+    init_files_panel(false);
     //check if we need setup
     if ( target_firmware == "???"){
         setupdlg();

www/js/app.js

@@ -105,7 +105,7 @@ function get_Position(){
         var pos2 = result_data.indexOf(" ", pos1);
         if (pos2 > -1){
             result = result_data.substring(pos1,pos2);
-        }
+        } else  result = result_data.substring(pos1);
     }
     return result.trim();
 }