Bugfix
(User-visible)
If you try to drag'n'drop a selected ApplicationAction in the ScriptRecorder`s ScriptRecorderTree, you get a `NullPointerException` after dropping the action.
Drag'n'Drop of unselected `ApplicationAction`s work as expected.
The ScriptRecorderComponent, which is the view with the XML editor for the individual TestActions, is linked to the ScriptRecorderTree via the selection channel.
When drag'n'dropping a selected test action, among other things, the action is deselected, i.e. the model of the ScriptRecorderComponent changes and thus its content. Consequently, since the component is a FormComponent, the form is updated. For this it needs the action from the selection. However, there it is assumed that the model can never be null. The test action of the selection model is accessed directly without NullCheck and thus a NullPointerException is obtained.
Test
Move a selected ApplicationAction by drag'n'drop in the ScriptRecorder. No error message should appear.