Description of problem:
User can set 'Is Async' property for variety of tasks (Manual, User ...). But this property is missing for script tasks. In web jbpm-designer is possibility to set 'Is Async' property also for script tasks.
Version-Release number of selected component (if applicable):
BPMN2 Modeler - 1.2.4.Final-v20160330-1625-B110
Steps to Reproduce:
1. Create new process
2. Add 'Script Task' to canvas
3. Open properties of task from step 2.
4. Select 'Script Task' tab
There is missing 'Is Async' property on selected tab
There is present 'Is Async' property on selected tab