As a user, I can export the result of a Test Execution with Xporter

The user should be able to export Test Execution issues using the Xporter template language.

A cycle should iterate though all Test Runs in a Test Execution and special keywords should be provided for accessing execution data like:

• the Test issue itself
• the execution result
• the execution comments
• the execution defects
• the execution evidences
• the execution step results through another cycle inside