Add NXT on component selection page (#1881)

* Add NXT on component selection page

* Add tests for NXT

Closes #1877

Author: MinyazevR

.github/workflows/installer.yml

@@ -99,7 +99,7 @@ jobs:
 
     - name: Downloads minimal tests for Diagram mode
       run: |
-        curl --output tests.7z "https://dl.trikset.com/edu/.solutions20200701/testing_small.7z"
+        curl --output tests.7z "https://dl.trikset.com/edu/.solutions20200701/testing_small_with_nxt.7z"
         7z x tests.7z || 7za x tests.7z
         
     - name: Prepare environment variable

installer/trik_studio_installscript.qs

@@ -27,7 +27,7 @@ Controller.prototype.StartMenuDirectoryPageCallback = function() {
 Controller.prototype.ComponentSelectionPageCallback = function() {
   var widget = gui.currentPageWidget();
 
-//  widget.deselectAll();
+  widget.selectAll();
 
 //  widget.selectComponent("ru.qreal.root.trik");
 //    widget.selectComponent("ru.qreal.root.trik.core");