Added title field to RA agreement

docs/personnel/RA-agreement.md

@@ -12,6 +12,7 @@ Here are some of the basics of your RAship:
 
 - Period: {Date}
 - Hours: {Hours/week, etc.}
+- Title: {Title; default: Research fellow}
 - Supervisor: {Supervisor}
 - Funding source: {Funder}