Roger's suggested changes to PR template

These are ideas Roger had for the template. I'll let him elaborate but I think the gist of it is that more people are checking against the Jira, and ensuring we're not blocked waiting for IPs to complete code review before merging.
I don't think this should be a thing that code review is used for. It's up to the person doing the work to ensure the work they've done has met the requirements of the jira. Code review, in my eyes, is to check that what they've done works, doesn't break anything and is of a good quality.