Show a "close issue" button at the sidebar on the issue board

Problem to solve

Closing issues at board view when having many lanes.

Intended users

anybody who works with issues

Further details

I like to work on my issues at a subgroup issue board. When I have to close many at once ther is no possibility to do it fast. I can only open each one, close it and go back.

Proposal

There sould be a "close issue" button at the right sidebar.

Permissions and Security

anybod who may close issues

Documentation

Yes, this should be document. All screenshots of the sidebar have to be updated.

Testing

anything with button UI and issue permissions

What does success look like, and how can we measure that?

The issue board user sees a button and can use it without error.

What is the type of buyer?

please add this to CE