Hotspots are not displayed in the issues list page anymore and hotspots are no more issues.
Count of issues Email notifications "change on my issues" includes hostpots and link to the issue page, this can't work anymore.
- title "Changes in issues assigned to me" => "Changes in issues/hotspots assigned to me"
Issues are counted by rule.
- when rule is a hotspot rule, the link should target the hotspots page instead of the issue page
- hotpot rules should be grouped together
- title of email should be changed to "A manual change has updated hotspot/issues assigned to you:"
- add parameter hotspots (optional): a set of hotspot keys
- make parameter projectKey optional