Allow a list of Tasks to be excluded from the revision

[eoyilmaz]

User Story

As the user of Stalker I want to be able to control which tasks are going to return back to HREV as a result of having a revision on a dependent task, so that I've the control over the damage done by the revision.

Acceptance Criteria

• Add a new parameter to the Review.request_revision() called exclude_dependency accepting a list of tasks.
• Add a new parameter ot the Review.finalize_review_set() called exclude_dependency accepting a list of tasks.
• Exclude the tasks from being set to HREV if they are in the exclude_dependency list.

[eoyilmaz]

I have second thoughts about this, as the task status will be set to CMPL where their dependency is not CMPL but HREV. This is an impossible condition and we should avoid it.

it might be better to give the user to complete those tasks easily when the original task is completed, instead of not setting their statuses to HREV. May be a programmed filter that can filter those tasks easily. But then, during the period the revised task is being worked on people are going to have DREV tasks on heir tasks list.

We should really need to investigate this from a UX perspective.