CSV Importer should allow user to choose to import Issue links as Outward or Inward Description.

Problem Definition

When performing a CSV Import, the only issue links that can be created are in the form of Outward Descriptions (eg. X blocks Y). However, there is no way to link in the form of Inward Descriptions (eg. X is blocked by Y). This is a hassle for users who wants to import new issues through CSV that have inward description links to existing issues.

Suggested Solution

Allow the user to pick whether the new links formed are in the form of Outward or Inward Descriptions.