Allow moving multiple mass many issues in one go

[42piratas]

+1

[cirosantilli]

@42piratas please use the new +1 button feature instead of comments to avoid notifying people and have an automated upvote count ;-)

[daiplusplus]

I'd like this feature to work by allowing us to specify labels/tags to move, e.g. "move all issues with the label 'project-foo'."