Update issue templates

.github/ISSUE_TEMPLATE/add-an-external-advisor.md

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+---
+name: Add an External Advisor
+about: Have you had discussions with someone outside of the team? Please make a request
+  to add an external adviser to our attributions page.
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+## Name, links, who are they?
+[FILLIN]
+
+## Institution Type (pick one of)
+- Academic
+- Nonprofit
+- Industry
+- Government
+- Other (Please explain in Specific Tasks column)
+
+## Relationship To Team (pick one of)
+- Collaborator - This entity worked jointly with the team on listed aspects of the project
+- Contractor - This entity provided services requested by the team
+- Sponsor - This entity provided support of finances and/or in kind donations to the team
+- External Advisor - This entity is NOT on the team roster but provided advice or guidance to the project.
+- Other - (Please explain in specific tasks column)
+
+## Tasks
+[FILLIN: you can leave this blank for now, or try to fill in based on iGEM's [attributions site](https://competition.igem.org/deliverables/project-attribution)]
+
+## Specific Tasks: What are they helping you with? 1-2 sentences is fine.