Sometimes user input is required for executing a Batch Task. It could be useful
to be able to configure a Batch Task to first ask the user for all necessary
input before executing the task.

Unfortunately this raises a couple of questions:

1) Input verification, yes or no?
2) How to pass the input to the Batch Task?
3) UI for configuring input values?
4) UI for entering the required values?
5) Defining input types?

Perhaps starting small is a good idea:

1) No
2) Environment variables
3) "Add value" button, adding a value name, short/long description in the
configuration page
4) Javascript popup (or something similarly simple) showing name, short/long
description and an input field
5) No, just plain text input that can be put into environment variables