Publish to confluence jira macro support

[jostaub]

Why?

Confluence offers the function / macro to display a small summary of a ticket (id, description, status). But if you use publishToConfluence, links to Jira tickets remain normal links.

This extension makes sure that Jira links generated by jira:ID[] will be displayed in the mentioned small overview when using publishToConfluence.

All Submissions:

• Does your PR affect the documentation?
• If yes, did you update the documentation or create an issue for updating it? -> updated documentation

Your first submission

• Welcome to the list of contributors! If you have any questions, feel free to ask them by creating a new issue
• Have you added your name to the list of contributors.adoc?

New Feature Submissions:

1. Did you create new tests for your submission?
   -> no existing tests for publishToConfluence (i did not find them)
2. Does your submission pass all tests? (see travis check)

Change to Documentation:

• Did you build the docs and copy them to the /docs folder?
• If not, did you create an issue for doing so?

inspiration: https://github.com/stevemao/github-issue-templates

[rdmueller]

thanx. seems to be a useful feature.
Sorry that it took me so long to check this PR :-|