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.
Yeah I can't say I agree with making it optional. Either make it compulsory or remove the section entirely as Mike suggested. 
I'm in favour for leaving it in as completing code reviews is part of being a developer. I don't think we're going to run into issues whether we're waiting on an IP to code review something. In my experience the IP's are often one of the first to review a PR. I guess if it ever became a problem we could review?