Added ability to block the VKB through code

This can be accomplished by defining the property:

Display.getInstance().setProperty("showVkb", "false");

This will block the VKB from showing. It can be se to null to disable this explicit behavior when no longer needed.

Fixed #3774

Ports/Android/src/com/codename1/impl/android/InPlaceEditView.java

@@ -601,8 +601,9 @@ public void run() {
      * @param show Show the keyboard if true, hide it otherwise
      */
     private void showVirtualKeyboard(boolean show) {
+        show = Boolean.parseBoolean(Display.getInstance().getProperty("showVkb", "" + show));
         Log.i(TAG, "showVirtualKeyboard show=" + show);
-
+        
         boolean result = false;
         if (show) {
             // If we're in landscape, Android will not show the soft