[FEAT] Add more interactions in the Hacktoberfest demo

[tbouffard]

Proposal

• Task about "Find an issue": make it clickable and redirect to the list of issues in a new window/tab.
  • Warn this link may not work when not connected to GitHub
  • Consider an alternative url that doesn't require to be authenticated. Try if https://github.com/issues?q=is%3Aissue+is%3Aopen+org%3Aprocess-analytics+archived%3Afalse+sort%3Aupdated-desc+label%3Ahacktoberfest allow guest access.
  • alternative: add a popover and then go the issue list?
  • is using a authenticated target page is a problem?
• Add interactions? This requires that the whole information can be stored in the BPMN diagram. Evaluate the gain of implementing this improvements and eventually, moved to a dedicated issue
  • Check that interaction are kept when changing the project name
  • Task including the Hacktoberfest URL: make it clickable and redirect to the Hacktoberfest website in a new window/tab. If we do this, the URL shouldn't be displayed but replace by a label to allow to reduce the width of the BPMN Task (see also
  • description: state that some elements are clickable. For example: Interact with the diagram (find the clickable elements)

Notes: be aware of #540