Show list of tasks when adding tasks to New Stage Form

[Dev-Akash]

There is need of showing list of task associated to the project in New Stage form while listening to the onChange listener of the input taking tasks as input.

Tasker/templates/project_dashboard.html

Lines 64 to 65 in 8d7298e

	Tasks Included<br>
	<input type="text" placeholder="Enter Task Names to be Included" id="stage_task_names"><br>

And it is import to add task_ids in task field from database so that it can be identified uniquely.