Ability to Remove +Add More Issues on issue tab

[#1]

It would be great if we could hide the bottom +Add More Issues so users only have access to the top New Issue button. We don't want people o assign other users issues/tasks and we get more info for the top issue button.

[#2]

This is same as this idea that's over threshold: https://one.workfront.com/s/idea/0870z000000PSrHAAW/detail